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D. Babacan</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bayesian Compressive Sensing using Laplace Priors</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1/2010</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/babacan_CS.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">19</style></volume><pages><style face="normal" font="default" size="100%">53-64</style></pages><abstract><style face="normal" font="default" size="100%">In this paper we model the components of the compressive sensing (CS) problem, i.e., the signal acquisition process, the unknown signal coefficients and the model parameters for the signal and noise using the Bayesian framework. We utilize a hierarchical form of the Laplace prior to model sparsity of the unknown signal. We describe the relationship among a number of sparsity priors proposed in the literature, and show the advantages of the proposed model including its high degree of sparsity. Moreover, we show that some of the existing models are special cases of the proposed model. Using our model, we develop a constructive (greedy) algorithm designed for fast reconstruction useful in practical settings. Unlike most existing CS reconstruction methods, the proposed algorithm is fully-automated, i.e., the unknown signal coefficients and all necessary parameters are estimated solely from the observation and therefore no user-intervention is needed. Additionally, the proposed algorithm provides estimates of the uncertainty of the reconstructions. 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Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Alan Liew</style></author><author><style face="normal" font="default" size="100%">Shilin Wang</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Audio-Visual and Visual-only Speech and Speaker Recognition- Issues about theory, system design, and implementation</style></title><secondary-title><style face="normal" font="default" size="100%">Visual Speech Recognition: Lip Segmentation and Mapping</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/VSR1.pdf</style></url><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/VSR1_0.pdf</style></url></related-urls></urls><section><style face="normal" font="default" size="100%">1</style></section><publisher><style face="normal" font="default" size="100%">IGI Global</style></publisher><pub-location><style face="normal" font="default" size="100%">Hershey, PA</style></pub-location><isbn><style face="normal" font="default" size="100%">978-1-60566-186-5</style></isbn></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">Jingnan Wang</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bayesian Blind Deconvolution from Differently Exposed Image Pairs</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/11/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Babacan_Dual_ICIP09.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Cairo, Egypt</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">E. Vera</style></author><author><style face="normal" font="default" size="100%">L. Mancera</style></author><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bayesian Compressive Sensing Of Wavelet Coefficients Using Multiscale Laplacian Priors</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Workshop on Statistical Signal Processing (SSP09)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">31/08/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/ssp2009.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Cardiff, Wales, UK</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">L. Mancera</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bayesian Compressive Sensing Using Non-Convex Priors</style></title><secondary-title><style face="normal" font="default" size="100%">European Signal Processing Conference 2009 (EUSIPCO'09)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">24/08/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/eusipco09.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Glasgow, Scotland</style></pub-location><abstract><style face="normal" font="default" size="100%">We propose a novel Bayesian formulation for the reconstruction from compressed measurements. We demonstrate that high-sparsity
enforcing priors based on l_p-norms, with 0 &lt; p &lt;= 1, can be used within a Bayesian framework by majorization-minimization methods. By employing a fully Bayesian analysis of the compressed sensing system and a variational Bayesian analysis for inference, the proposed framework provides model parameter estimates along with the unknown signal, as well as estimates of the unknowns, so we can  calculate their uncertainties. We also show that some existing methods can be derived as special cases of the proposed compressed  sensing framework. Results demonstrate the high performance of the proposed algorithm compared to commonly used methods for  compressed sensing recovery.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Reto Ansorge</style></author><author><style face="normal" font="default" size="100%">Martin Luessi</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Compressive Sensing of Light Fields</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/11/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/light%20fields.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Cairo, Egypt</style></pub-location><abstract><style face="normal" font="default" size="100%">We propose a novel camera design for light field image acquisition using compressive sensing. By utilizing a randomly coded non-refractive mask in front of the aperture, incoherent measurements of the light passing through different regions are encoded in the captured images. A novel reconstruction algorithm is proposed to recover the original light field image from these acquisitions. Using the principles of compressive sensing, we demonstrate that light field images with high angular dimension can be captured with only a few acquisitions. Moreover, the proposed design provides images with high spatial resolution and signal-to-noise-ratio (SNR), and therefore does not suffer from limitations common to existing light-field camera designs. Experimental results demonstrate the efficiency of the proposed system.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">L. A. Drake</style></author><author><style face="normal" font="default" size="100%">J. C. Rutledge</style></author><author><style face="normal" font="default" size="100%">J. Zhang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Computational Auditory Scene Analysis-Enhanced Beamforming Approach for Sound Source Separation</style></title><secondary-title><style face="normal" font="default" size="100%">EURASIP Journal on Advances in Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/drake2009.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">2009</style></volume></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Jiang</style></author><author><style face="normal" font="default" size="100%">Ying Wu</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Detecting contextual anomalies of crowd motion in surveillance video</style></title><secondary-title><style face="normal" font="default" size="100%">Int. Conf. on Image Process. (ICIP'09)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Jiang_ICIP09.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Cairo, Egypt</style></pub-location><pages><style face="normal" font="default" size="100%">1117-1120</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Jiang</style></author><author><style face="normal" font="default" size="100%">Ying Wu</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A dynamic hierarchical clustering method for trajectory-based unusual video event detection</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Image Process.</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">April 2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Jiang_TIP09.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">907-913</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Martin Luessi</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Motion Compensated Frame Rate Upconversion Using Multiple  Interpolations and Median Filtering</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing (ICIP)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/11/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/luessi_2009_mcfruc.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Cairo, Egypt</style></pub-location><abstract><style face="normal" font="default" size="100%">Methods for motion compensated frame rate upconversion exploit motion in order to generate interpolated frames that are temporally 
located between the available original frames of a video sequence. When the interpolated frames are inserted into the original sequence,  the resulting sequence has a higher visual quality due to the increased frame rate. We propose a method for motion compensated frame rate upconversion which reduces upconversion artifacts by combining multiple intermediate interpolations utilizing median filtering.  We use an efficient block based motion estimation method which makes use of motion vectors extracted from an H.264 bitstream. Low computational complexity makes the method suitable for real time operation.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">L. Gao</style></author><author><style face="normal" font="default" size="100%">Z. Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Efficient Video Indexing and Retrieval Algorithm using the Luminance Field</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE  Trans. Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct. 2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/lix2_0.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">19</style></volume><pages><style face="normal" font="default" size="100%">1566-1570</style></pages><issue><style face="normal" font="default" size="100%">10</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fast Bayesian Compressive Sensing using Laplace Priors</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conf. on Acoustics, Speech, and Signal Processing (ICASSP’09)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">19/04/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Babacan_ICASSP09.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Taipei, Taiwan</style></pub-location><abstract><style face="normal" font="default" size="100%">In this paper we model the components of the compressive sensing (CS) problem using the Bayesian framework by utilizing a hierarchical form of the Laplace prior to model sparsity of the unknown signal. This signal prior includes some of the existing models as special cases and achieves a high degree of sparsity. We develop a constructive (greedy) algorithm resulting from this formulation where necessary parameters are estimated solely from the observation and therefore no user-intervention is needed. We provide experimental results with synthetic 1D signals and images, and compare with the state-of-the-art CS reconstruction algorithms demonstrating the superior performance of the proposed approach.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Martin Luessi</style></author><author><style face="normal" font="default" size="100%">M. Eichmann</style></author><author><style face="normal" font="default" size="100%">G. M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Framework for Efficient Optimal Multilevel Image Thresholding</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Electronic Imaging</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/luessi_2009_eff_thresholding.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">SPIE</style></publisher><volume><style face="normal" font="default" size="100%">18</style></volume><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">L. Mancera</style></author><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Larson</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Improved R2* Measurement Accuracy with Absolute SNR Truncation and Optimal Coil Combination (pre-printing)</style></title><secondary-title><style face="normal" font="default" size="100%">ISMRM 2009</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">Chun-Jen Tsai</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Al Bovik</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Image Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">The Essential Guide to Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><publisher><style face="normal" font="default" size="100%">Elsevier</style></publisher></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Xiaoming Yin</style></author><author><style face="normal" font="default" size="100%">Andrew C. Larson</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">k-TE GRAPPA for Accelerated Multiple Gradient Recalled Echo (MGRE)  (pre-printing)</style></title><secondary-title><style face="normal" font="default" size="100%">Magnetic Resonance in Medicine</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. Vega</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Aleksic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">A. Liew</style></author><author><style face="normal" font="default" size="100%">S. Wang</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Lip Feature Extraction and Feature Evaluation in the Context of Speech and Speaker Recognition</style></title><secondary-title><style face="normal" font="default" size="100%">Visual Speech Recognition: Lip Segmentation and Mapping</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/VSR39.pdf</style></url><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/VSR39_0.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Hershey, PA, IGI Global</style></publisher></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. P. Belekos</style></author><author><style face="normal" font="default" size="100%">N. Galatsanos</style></author><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Maximum a posteriori Super-Resolution of compressed video using a new multichannel image prior</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/11/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Belekos_ICIP09.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Cairo, Egypt</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Z. Li</style></author><author><style face="normal" font="default" size="100%">Y. Fu</style></author><author><style face="normal" font="default" size="100%">J. Yuan</style></author><author><style face="normal" font="default" size="100%">Y. Wu</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">T. S. Huang</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Tao, Xu,</style></author><author><style face="normal" font="default" size="100%">Li</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Multimedia Data Indexing,</style></title><secondary-title><style face="normal" font="default" size="100%">Semantic Mining Technologies for Multimedia Databases</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Tao%20Ch19.pdf</style></url></related-urls></urls><section><style face="normal" font="default" size="100%">19</style></section><publisher><style face="normal" font="default" size="100%">IGI Global Publications</style></publisher><pub-location><style face="normal" font="default" size="100%">Hershey,  New York</style></pub-location><pages><style face="normal" font="default" size="100%">449-475</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ehsan Maani</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Optimized Bit Extraction Using Distortion Modeling in the Scalable Extension of H.264/AVC</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/getPDF_1.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">2022-2029</style></pages><issue><style face="normal" font="default" size="100%">9</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">J. Zhang</style></author><author><style face="normal" font="default" size="100%">D. Wu</style></author><author><style face="normal" font="default" size="100%">S. Ci</style></author><author><style face="normal" font="default" size="100%">H. Wang</style></author><author><style face="normal" font="default" size="100%">A. K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Power-Aware Mobile Multimedia: a Survey (Invited Paper)</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Communications</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Dec. 2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/review_song.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">600-613</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">9</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">D. Wu</style></author><author><style face="normal" font="default" size="100%">C. Song</style></author><author><style face="normal" font="default" size="100%">H. Luo</style></author><author><style face="normal" font="default" size="100%">H. Wang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Quality-Driven Decision Engine for Live Video Transmission under Service-Oriented Architecture</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Wireless Communications</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/song.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">16</style></volume><pages><style face="normal" font="default" size="100%">48-54</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Retrieval Efficiency of DNA-Based Databases of Digital Signals</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. NanoBioscience</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/sotos_nanobio.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">8</style></volume><pages><style face="normal" font="default" size="100%">259-270</style></pages><abstract><style face="normal" font="default" size="100%">Using DNA to store digital signals, or data in general, offers
significant advantages when compared to other media. The DNA
molecule, especially in its double stranded form, is very stable,
compact, and inexpensive. In the past, we have shown that DNA can be
used to store and retrieve digital signals encoded and stored in
DNA. We have also shown that DNA hybridization can be used as a
similarity criterion for retrieving digital signals encoded and
stored in a DNA database. Retrieval is achieved through
hybridization of `query' and `data' DNA molecules. In this paper, we
present a mathematical framework to simulate single query and
parallel query scenarios and to estimate hybridization efficiency.
Our framework allows for exact numerical solutions as well as closed
form approximations under certain conditions.  Similarly to the
digital domain, we define a DNA signal-to-noise ratio (SNR) measure
to assess the performance of the DNA-based retrieval scheme in terms
of database size and source statistics.  With approximations, we
show that the SNR of any finite size DNA-based database is upper
bounded by the SNR of an infinitely large DNA-based database that
has the same source distribution. Computer simulations are presented
to validate our results.
</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">E. Maani</style></author><author><style face="normal" font="default" size="100%">P. V. Pahalawatta</style></author><author><style face="normal" font="default" size="100%">R. Berry</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Scalable video coding and packet scheduling for multiuser video transmission over wireless networks</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Optics+Photonics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2/7/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/emaaniscalable3G.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Diego, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Dai</style></author><author><style face="normal" font="default" size="100%">M. Han</style></author><author><style face="normal" font="default" size="100%">W. Xu</style></author><author><style face="normal" font="default" size="100%">Y. Wu</style></author><author><style face="normal" font="default" size="100%">Y. Gong</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Soft Edge Smoothness Prior for Alpha Channel Super Resolution</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">05/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/softcuts.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">969-981</style></pages><issue><style face="normal" font="default" size="100%">5</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. Vega</style></author><author><style face="normal" font="default" size="100%">J. Mateos</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Super-Resolution of Multispectral Images</style></title><secondary-title><style face="normal" font="default" size="100%">The Computer Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan. 2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/153_0.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Oxford University Press</style></publisher><volume><style face="normal" font="default" size="100%">52</style></volume><pages><style face="normal" font="default" size="100%">153-167</style></pages><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ehsan Maani</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Two-Dimentional Channel Coding for Scalable H.264/AVC Video</style></title><secondary-title><style face="normal" font="default" size="100%">Picture Coding Symposium</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">15/05/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/emaani_pcs2009.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Chicago, IL</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Variational Bayesian Blind Deconvolution Using a Total Variation Prior</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/babacan_TIP09.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">12 - 26</style></pages><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jingnan Wang</style></author><author><style face="normal" font="default" size="100%">G. deHaan</style></author><author><style face="normal" font="default" size="100%">D Unay</style></author><author><style face="normal" font="default" size="100%">O Soldea</style></author><author><style face="normal" font="default" size="100%">Ahmet Ekin</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Voxel-based Discriminant Map Classification on Brain Ventricles for Alzheimer's Disease</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Medical Imaging</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/wang2008_0.pdf</style></url></related-urls></urls></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Jiang</style></author><author><style face="normal" font="default" size="100%">Ying Wu</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Abnormal event detection based on trajectory clustering by 2-depth greedy search</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Int'l Conf. on Acoustics, Speech, and Signal Process. (ICASSP’08)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">31/3/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Jiang_ICASSP08.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Las Vegas, NV</style></pub-location><pages><style face="normal" font="default" size="100%">2129-2132</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Jana Zujovic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Automated line flattening of atomic force microscopy images</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing (ICIP)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/10/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Tsaftaris_ICIP_2008_AFM_0.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Diego, CA</style></pub-location><pages><style face="normal" font="default" size="100%">2968-2971</style></pages><abstract><style face="normal" font="default" size="100%">In this paper, an automated algorithm to flatten lines from Atomic Force Microscopy (AFM) images is presented. Due to the mechanics of the AFM, there is a curvature distortion (bowing effect) present in the acquired images. At present, flattening such images requires human intervention to manually segment object data from the background, which is time consuming and highly inaccurate. The proposed method classifies the data into objects and background, and fits convex lines in an iterative fashion. Results on real images from DNA wrapped carbon nanotubes (DNA-CNTs) and synthetic experiments are presented, demonstrating the effectiveness of the proposed algorithm in increasing the resolution of the surface topography.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ioannis Koktzoglou</style></author><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Sven Zuelhlsdorff</style></author><author><style face="normal" font="default" size="100%">Debiao Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Rohan Dharmakumar</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Automated Tracking of a Passive Endomyocardial Stiletto Catheter with Dephased FLAPS MRI: A feasibility Study</style></title><secondary-title><style face="normal" font="default" size="100%">16th Meeting of the International Society for Magnetic Resonance in Medicine</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">02/05/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/koktzoglou_0.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">ISMRM</style></publisher><pub-location><style face="normal" font="default" size="100%">Toronto, Canada</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ioannis Koktzoglou</style></author><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Sven Zuelhlsdorff</style></author><author><style face="normal" font="default" size="100%">Debiao Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Rohan Dharmakumar</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Automated Tracking of a Passive Intramyocardial Needle with Off-Resonance MRI: A feasibility Study</style></title><secondary-title><style face="normal" font="default" size="100%">Society of Cardiovascular Magnetic Resonance</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/02/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/koktzoglou.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Los Angeles, California, USA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bruno Amizic</style></author><author><style face="normal" font="default" size="100%">M. Fimoff</style></author><author><style face="normal" font="default" size="100%">S. Nerayanuru</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Channel impulse response (CIR) estimating decision feedback equalizer with phase tracker</style></title><secondary-title><style face="normal" font="default" size="100%">US patent 7,382,828</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2008</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Xiaoming Yin</style></author><author><style face="normal" font="default" size="100%">Andrew C. Larson</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Combination of MR Surface Coil Images Using Weighted Constrained Least Squares</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conf. on Image Processing 2008</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">undefined</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/10/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/babacan_ICIP08_WCLS.pdf</style></url></related-urls></urls><abstract><style face="normal" font="default" size="100%">For most MR imaging applications multiple surface coils are used to obtain images with high signal-to-noise ratios (SNR). 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Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">05/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/jianwei.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">582-595</style></pages><issue><style face="normal" font="default" size="100%">5</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Optimized Bit Extraction Using Distortion Estimation in the Scalable Extension of H.264/AVC</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Symposium on Multimedia (ISM)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">15/12/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/conf_source.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Berkeley, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Parameter Estimation in Total Variation Blind Deconvolution</style></title><secondary-title><style face="normal" font="default" size="100%">European Signal Processing Conference 2008 (EUSIPCO'08)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">25/08/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/eusicp2008.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Lausanne, Switzerland</style></pub-location><abstract><style face="normal" font="default" size="100%">In this paper we present a methodology for parameter estimation in total variation (TV) blind deconvolution. 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Terry</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Resource Allocation for Downlink Multiuser Video Transmission over Wireless Lossy Networks</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/maani_sept_08.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">17</style></volume><pages><style face="normal" font="default" size="100%">1663-1671</style></pages><issue><style face="normal" font="default" size="100%">9</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Jana Zujovic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Restoration of the Cantilever Bowing Distortion in Atomic Force Microscopy</style></title><secondary-title><style face="normal" font="default" size="100%">European Signal Processing Conference 2008 (EUSIPCO'08)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">25/08/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/1569105426%20%281%29.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Lausanne, Switzerland</style></pub-location><abstract><style face="normal" font="default" size="100%">Due to the mechanics of the Atomic Force Microscope (AFM), there is a curvature distortion (bowing effect) present in the acquired images. At present, flattening such images requires human intervention to manually segment object data from the background, which is time consuming and highly inaccurate. In this paper, an automated algorithm to flatten lines from AFM images is presented. The proposed method classifies the data into objects and background, and fits convex lines in an iterative fashion. Results on real images from DNA wrapped carbon nanotubes (DNA-CNTs) and synthetic experiments are presented, demonstrating the effectiveness of the proposed algorithm in increasing the resolution of the surface topography. In addition a link between the flattening problem and MRI inhomogeneity (shading) is given and the proposed method is compared to an entropy based MRI inhomogeniety correction method.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jingnan Wang</style></author><author><style face="normal" font="default" size="100%">Ahmet Ekin</style></author><author><style face="normal" font="default" size="100%">Gerard deHaan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Shape Analysis of Brain Ventricles for Improved Classification of Alzheimer's Patients</style></title><secondary-title><style face="normal" font="default" size="100%">International Conference on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/wang2008.pdf</style></url></related-urls></urls></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">K. E. Zachariadis</style></author><author><style face="normal" font="default" size="100%">M. L. Honig</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Source Fidelity over Fading Channels: Performance of Erasure and Scalable Codes</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. on Communications</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/zahariadis.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">56</style></volume><pages><style face="normal" font="default" size="100%">1080-1091</style></pages><issue><style face="normal" font="default" size="100%">7</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Total Variation Super Resolution Using A Variational Approach</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conf. on Image Processing 2008</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/10/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/babacan_ICIP08_SR.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Diego, USA</style></pub-location><abstract><style face="normal" font="default" size="100%">In this paper we propose a novel algorithm for super resolution based on total variation prior and variational distribution approximations. We formulate the problem using a hierarchical Bayesian model where the reconstructed high resolution image and the model parameters are estimated simultaneously from the low resolution observations. The algorithm resulting from this formulation utilizes variational inference and provides approximations to the posterior distributions of the latent variables. Due to the simultaneous parameter estimation, the algorithm is fully automated so parameter tuning is not required. Experimental results show that the proposed approach outperforms some of the state-of-the-art super resolution algorithms.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">T. Georgiev</style></author><author><style face="normal" font="default" size="100%">C. Intwala</style></author><author><style face="normal" font="default" size="100%">S. D. Babacan</style></author><author><style face="normal" font="default" size="100%">A. Lumsdaine</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Unified Frequency Domain Analysis of Lightfield Cameras</style></title><secondary-title><style face="normal" font="default" size="100%">European Conference on Computer Vision (ECCV)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/10/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/ufda_eccv2008.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Marseille, France</style></pub-location><abstract><style face="normal" font="default" size="100%">This paper presents a theory that encompasses both &quot;plenoptic&quot; (microlens based) and &quot;heterodyning&quot; (mask based) cameras in a single frequency-domain mathematical formalism. Light-field capture has traditionally been analyzed using spatio-angular representation, with the exception of the frequency-domain &quot;heterodyning&quot; work. In this paper we interpret &quot;heterodyning&quot; as a general theory of multiplexing the radiance in the frequency domain. Using this interpretation, we derive a mathematical theory of recovering the 4D spatial and angular information from the multiplexed 2D frequency representation. The resulting method is applicable to all lightfield cameras, lens-based and mask-based. The generality of our approach suggests new designs for lightfield cameras. We represent one such novel lightfield camera, based on a mask outside a conventional camera. Experimental results are represented for all cameras described.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bruno Amizic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">R. Molina</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Using Logarithmic Opinion Pooling Techniques in Bayesian Blind Multichannel Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Third International Conference in Computer Vision and Applications (Special session on: Bayesian Approach for Inverse Problems in Computer Vision)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/amizic.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Funchal, Madeira (Portugal)</style></pub-location><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">565-570</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">M. Vega</style></author><author><style face="normal" font="default" size="100%">J. Mateos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Variational Posterior Distribution Approximation in Bayesian Super Resolution Reconstruction of Multispectral Images</style></title><secondary-title><style face="normal" font="default" size="100%"> Applied and Computational Harmonic Analysis, special issue on Mathematical Imaging</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">3/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/m_v_m_k.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">24</style></volume><pages><style face="normal" font="default" size="100%">251-267</style></pages><issue><style face="normal" font="default" size="100%">2</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Louis H. Terry</style></author><author><style face="normal" font="default" size="100%">Derek J. Shiell</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Vector Quantization with Memory and Multi-labeling for Isolated Video-Only Automatic Speech Recognition</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conf. on Image Processing 2008</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/10/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/TD_VQ_for_VASR.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Diego, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Jiang</style></author><author><style face="normal" font="default" size="100%">Ying Wu</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Abnormal event detection from surveillance video by dynamic hierarchical clustering</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Int'l Conf. on Image Process. (ICIP’07)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Jiang_ICIP07.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Antonio, TX</style></pub-location><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">145-148</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Derek J. Shiell</style></author><author><style face="normal" font="default" size="100%">Louis H. Terry</style></author><author><style face="normal" font="default" size="100%">Petar S. Aleksic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Automated System for Visual Biometrics</style></title><secondary-title><style face="normal" font="default" size="100%">Forty-Fifth Annual Allerton Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">26/09/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/allerton_2007.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Urbana-Champaign, IL</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Tom E. Bishop</style></author><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Bruno Amizic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Tony Chan</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Patrizio Campisi</style></author><author><style face="normal" font="default" size="100%">Karen Egiazarian</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Blind image deconvolution: problem formulation and existing approaches</style></title><secondary-title><style face="normal" font="default" size="100%">Blind image deconvolution: theory and applications</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><publisher><style face="normal" font="default" size="100%">CRC press</style></publisher><isbn><style face="normal" font="default" size="100%">9780849373671</style></isbn></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Z. Li</style></author><author><style face="normal" font="default" size="100%">J. Huang</style></author><author><style face="normal" font="default" size="100%">A. K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Content Reserve Utility Based Video Segment Transmission Scheduling for Peer-to-Peer Live Video Streaming System</style></title><secondary-title><style face="normal" font="default" size="100%">45th Annual Allerton Conf. on Commun., Control and Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Allerton07.pdf</style></url></related-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">P. V. Pahalawatta</style></author><author><style face="normal" font="default" size="100%">R. Berry</style></author><author><style face="normal" font="default" size="100%">T. N. Pappas</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Content-Aware Resource Allocation and Packet Scheduling for Video Transmission Over Wireless Networks</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Journal on Selected Areas in Communications,  Special Issue on Cross-Layer Optimization for Wireless Multimedia Communications</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">5/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/04205057.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">25</style></volume><pages><style face="normal" font="default" size="100%">749-759</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peshala V. Pahalawatta</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Content-Aware Resource Allocation for Scalable Video Transmission to Multiple Users Over a Wireless Network</style></title><secondary-title><style face="normal" font="default" size="100%">ICASSP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">15/04/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/04217214.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Hawaii, USA</style></pub-location><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">853-856</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Ramandeep Ahuja</style></author><author><style face="normal" font="default" size="100%">Derek Shiell</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">DNA Microarray Image Intensity Extraction Using Eigenspots</style></title><secondary-title><style face="normal" font="default" size="100%">International Conference on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">16/09/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Tsaftaris_ICIP_2007.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Antonio, Texas</style></pub-location><volume><style face="normal" font="default" size="100%">VI</style></volume><pages><style face="normal" font="default" size="100%">265-268</style></pages><abstract><style face="normal" font="default" size="100%">DNA microarrays are commonly used in the rapid analysis of gene expression in organisms. Image analysis is used to measure the average intensity of circular image areas (spots), which correspond to the level of expression of the genes. A crucial aspect of image analysis is the estimation of the background noise. Currently, background subtraction algorithms are used to estimate the local background noise and subtract it from the signal. In this paper we use Principal Component Analysis (PCA) to de-correlate the signal from the noise, by projecting each spot on the space of eigenvectors, which we term eigenspots. PCA is well suited for such application due to the structural nature of the images. To compare the proposed method with other background estimation methods we use the industry standard signal-to-noise metric xdev.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peshala V. Pahalawatta</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Downlink Packet Scheduling and Resource Allocation for Multiuser Video Transmission Over Wireless Networks</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical Engineering and Computer Science</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PeshPhDThesis.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">Evanston</style></pub-location><pages><style face="normal" font="default" size="100%">102</style></pages><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Louis H. Terry</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ergodic Hidden Markov Models for Visual-Only Isolated Digit Recognition</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical Engineering and Computer Science</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/MS_Thesis2.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">Evanston</style></pub-location><pages><style face="normal" font="default" size="100%">90</style></pages><abstract><style face="normal" font="default" size="100%">Accurate, robust, automatic speech recognition (ASR) systems represent the cornerstone of advanced human-computer interaction. An inherent asymmetry exists in current human-computer interfaces (HCIs); the human communicates through physical interaction via a keyboard and/or mouse while the computer communicates through visual and auditory channels. This asymmetry prevents human-computer interaction in the familiar, natural style of human-human interaction. With systems able to mimic human-human interaction, technology becomes more natural, free-flowing, and seamlessly integrated into modern life. This broad-reaching goal serves as motivation for this work.

Upon examination of modern speech recognition systems, one finds that no system actually models the speech production phenomenon. These state of the art systems instead model the symbols produced by speech in the form of words or sub-word units. With this realization in mind, this work proposes a system architecture which directly models the speech production phenomenon. As a direct consequence, this approach separates articulation modeling and articulation interpretation.

This work formulates this framework, dubbed the &quot;Articulation Model&quot; framework, and then compares it against the state of the art speech recognizer using only video cues to recognize isolated digits.</style></abstract><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hongqiang Wang</style></author><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Khalid Sayood</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Lossless Hyperspectral Image Compression Using Context-Based Conditional Average</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Geoscience and Remote Sensing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/wangGRS07_0.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">45</style></volume><pages><style face="normal" font="default" size="100%">4187-4193</style></pages><issue><style face="normal" font="default" size="100%">12</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Martin Luessi</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Motion Compensated Frame Rate Upconversion</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical Engineering an Computer Science</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ehsan Maani</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Alvarez</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Gustavo M. Callico</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Region-Based Super-Resolution for Compression</style></title><secondary-title><style face="normal" font="default" size="100%">Multidimensional Systems and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/MSSP_dacil_et_al_07.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">59-81</style></pages><issue><style face="normal" font="default" size="100%">2-3</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. Park</style></author><author><style face="normal" font="default" size="100%">Moon Gi Kang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regularized Super-Resolution Image Reconstruction Considering Inaccurate Motion Information</style></title><secondary-title><style face="normal" font="default" size="100%">Optical Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Kang_oe_nov07_0.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%"> 46</style></volume><issue><style face="normal" font="default" size="100%">11</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ehsan Maani</style></author><author><style face="normal" font="default" size="100%">Peshala V. Pahalawatta</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Resource allocation for downlink multi-user video transmission over wireless lossy networks</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">15/09/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/getPDF.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Antonio, TX</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Retrieval Accuracy of Very Large DNA-Based Databases of Digital Signals</style></title><secondary-title><style face="normal" font="default" size="100%">European Signal Processing Conference (EUSIPCO-2007)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">03/09/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Tsaftaris_EUSIPCO_2007.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Poznań, Polland</style></pub-location><pages><style face="normal" font="default" size="100%">1561-1565</style></pages><abstract><style face="normal" font="default" size="100%">In this paper a simulation of single query searches in very large DNA-based databases that are capable of storing and retrieving digital signals is presented. Similarly to the digital domain, a signal-to-noise ratio (SNR) measure to assess the performance of theDNA-based retrieval scheme in terms of database size and source statistics is defined. With approximations, it is shown that the SNR of any finite size DNA based database is upper bounded by the SNR of an infinitely large one with the same source distribution. Computer simulations are presented to validate the theoretical outcomes.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peshala V. Pahalawatta</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Pahalawatta</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Content Aware Scheduling Scheme for Video Streaming to Multiple Users Over Wireless Networks</style></title><secondary-title><style face="normal" font="default" size="100%">European Signal Processing Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">4/9/2006</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%"> Florence, Italy</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Haohong Wang</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cost-Distortion Optimized Unequal Error Protection for Object-based Video Communications</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/CDOptUneqErr_CSVT_05.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">1505-1516</style></pages><issue><style face="normal" font="default" size="100%">12</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Vassili Hatzimanikatis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Luis Mateus Rocha</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">DNA as a Medium for Storing Digital Signals</style></title><secondary-title><style face="normal" font="default" size="100%">Artificial Life X</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">03/06/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/ALIFEX_tsaftaris.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">The MIT Press</style></publisher><pub-location><style face="normal" font="default" size="100%">Bloomington, Indiana USA</style></pub-location><pages><style face="normal" font="default" size="100%">303-309</style></pages><abstract><style face="normal" font="default" size="100%">Motivated by the storage capacity and efficiency of the DNA molecule in this paper we propose to utilize DNA molecules to store digital signals.  We show that hybridization of DNA molecules can be used as a similarity criterion for retrieving digital signals encoded and stored in a DNA database.  Since retrieval is achieved through hybridization of query and data carrying DNA molecules, we present a mathematical model to estimate hybridization efficiency (also known as selectivity annealing).  We show that selectivity annealing is inversely proportional to the mean squared error (MSE) of the encoded signal values.  In addition, we show that the concentration of the molecules plays the same role as the decision threshold employed in digital signal matching algorithms.  Finally, similarly to the digital domain, we define a DNA signal-to-noise ratio (SNR) measure to assess the performance of the DNA-based retrieval scheme.  Simulations are presented to validate our arguments.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Vassili Hatzimanikatis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">DNA Hybridization as a Similarity Criterion for Querying Digital Signals Stored in DNA Databases</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Intern. Conf. on Acoustics, Speech and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">14/05/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01660535.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Toulouse, France</style></pub-location><volume><style face="normal" font="default" size="100%">II</style></volume><pages><style face="normal" font="default" size="100%">1084-1087</style></pages><abstract><style face="normal" font="default" size="100%">We demonstrate via simulation that hybridization of DNA molecules can be used as a similarity criterion for retrieving digital signals encoded and stored in a synthesized DNA database. After introducing some necessary DNA terminology, we briefly explain how digital signals are transformed to DNA sequences. Since retrieval is achieved through hybridization of query and data carrying DNA molecules, we present a mathematical model to estimate hybridization efficiency (also known as selectivity annealing). We show that selectivity annealing is inversely proportional to the mean squared error (MSE) of the encoded signal values. In addition, we show that the concentration of the molecules plays the same role as the decision threshold employed in digital signal matching algorithms. Finally, similar to the digital domain, we define a DNA signal-to-noise ratio (SNR) measure to assess the performance of theDNA-based retrieval scheme. Simulations are presented to validate our arguments.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">John G. Webster</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">DNA Sequencing</style></title><secondary-title><style face="normal" font="default" size="100%">Encyclopedia of Medical Devices and Instrumentation</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><publisher><style face="normal" font="default" size="100%">John Wiley and Sons</style></publisher></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">DNA-Based Storage and Retrieval of Digital Signals</style></title><secondary-title><style face="normal" font="default" size="100%">Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">Evanston</style></pub-location><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">L. Gao</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Embedded Local Linear Spaces for Efficient Video Shot Indexing and Retrieval</style></title><secondary-title><style face="normal" font="default" size="100%"> IEEE Int. Conf. on Multimedia &amp; Expo (ICME)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1/6/2006</style></date></pub-dates></dates></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Li Gao</style></author><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fast Video Shot Retrieval with Luminance Field Trace Indexing and Geometry Matching</style></title><secondary-title><style face="normal" font="default" size="100%">ICIP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/10/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/04106825.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Atlanta, Georgia</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Miguel Vega</style></author><author><style face="normal" font="default" size="100%">Javier Mateos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Hierarchical Bayesian Super Resolution Reconstruction of Multispectral Images</style></title><secondary-title><style face="normal" font="default" size="100%">EUSIPCO-06</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Bayesian Methods for Inverse Problems in Image and Signal Processing</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/09/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/1568982078.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Florence, Italy</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Eren Soyak</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Inter-layer Context Modeling for Scalable Video Compression</style></title><secondary-title><style face="normal" font="default" size="100%">Electrical Engineering and Computer Science</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/scalable_cabac.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">Evanston</style></pub-location><pages><style face="normal" font="default" size="100%">61</style></pages><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jian Wei Huang</style></author><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Mung Chang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Rate Control and Scheduling for Wireless Uplink Video Streaming</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Zhejiang University, Science A</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">05/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/A060516.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">801-810</style></pages><issue><style face="normal" font="default" size="100%">5</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ehsan Maani</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Source-Channel Coding and Power Allocation for Video Transmission over Wirelss Fading Channels</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. IEEE Consumer Communications and Networking Conference (CCNC2006)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/01/2006</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Las Vegas, NV</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Haohong Wang</style></author><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Source-Channel Coding for Wireless Object-based Video Communications Utilizing Data Hiding</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/WangTsaftKats_TIP06.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">2158-2169</style></pages><abstract><style face="normal" font="default" size="100%">In recent years, joint source-channel coding for multimedia communications has gained increased popularity. However, very limited work has been conducted to address the problem of joint source-channel coding for object-based video. In this paper, we propose a data hiding scheme that improves the error resilience of object-based video by adaptively embedding the shape and motion information into the texture data. Within a rate-distortion theoretical framework, the source coding, channel coding, data embedding, and decoder error concealment are jointly optimized based on knowledge of the transmission channel conditions. Our goal is to achieve the best video quality as expressed by the minimum total expected distortion. The optimization problem is solved using Lagrangian relaxation and dynamic programming. The performance of the proposed scheme is tested using simulations of a Rayleigh-fading wireless channel, and the algorithm is implemented based on the MPEG-4 verification model. Experimental results indicate that the proposed hybrid source-channel coding scheme significantly outperforms methods without data hiding or unequal error protection.</style></abstract><issue><style face="normal" font="default" size="100%">8</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>6</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Al Bovik</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Source-Channel Video Transmission</style></title><secondary-title><style face="normal" font="default" size="100%">Synthesis Lectures on Image, Video, &amp; Multimedia Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><publisher><style face="normal" font="default" size="100%">Morgan &amp; Claypool Publishers</style></publisher><isbn><style face="normal" font="default" size="100%">978-1598290448</style></isbn></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Li Gao</style></author><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">LUFT (Luminance Field Trace) Tree: A Video Shot Segmentation and Indexing Scheme for Fast Retrieval</style></title><secondary-title><style face="normal" font="default" size="100%">Int. Conf. on Visual Information Engineering (VIE 2006)</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Semantic Multimedia</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">26/09/2006</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Bangalore, India</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Faisal Ishtiaq</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and structure for scalability type selection in digital video</style></title><secondary-title><style face="normal" font="default" size="100%">6,996,172</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/02/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US6996172.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc.</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">A scalability type selection method and structure for hybrid SNR-temporal scalability that employs a decision mechanism capable of selecting between SNR and temporal scalability based upon desired criteria is disclosed. This method and structure utilizes models of the desired criteria such as the extent of motion between two encoded frames, the temporal distance between two encoded frames, the gain in visual quality achieved by using SNR scalability over temporal scalability, and the bandwidth available to the scaleable layer in deciding which form of scalability to use. Furthermore, the method and structure allows for control over the extent to which a certain type of scalability is used. By the selection of parameters used in the models, a certain type of scalability can be emphasized while another type of scalability can be given less preference. This invention not only allows the type of scalability to be selected but also to the degree to which the scalability will be used.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Motion Compensated Shape Error Concealment</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">02/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/MotCompShape_TIP_06.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">501-510</style></pages><issue><style face="normal" font="default" size="100%">2</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Martin Luessi</style></author><author><style face="normal" font="default" size="100%">Marco Eichmann</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">New Results on Efficient Optimal Multilevel Image Thresholding</style></title><secondary-title><style face="normal" font="default" size="100%">2006 IEEE International Conference on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/10/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Luessi_New_Results_on_Efficient_Optimal_Multilevel_Image_Thresholding.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Atlanta GA</style></pub-location><pages><style face="normal" font="default" size="100%">773 - 776</style></pages><abstract><style face="normal" font="default" size="100%">Image thresholding is one of the most common image processing operations, since almost all image processing schemes need some sort of separation of the pixels into different classes. In order to find the thresholds, almost all methods analyze the histogram of the image. In most cases, the optimal thresholds are found by either minimizing or maximizing an objective function, which depends on the positions of the thresholds. We identify two classes of objective functions for which the optimal thresholds can be found by algorithms with low time complexity. We show, that for example the method proposed by Otsu (1979) and other well known methods have objective functions belonging to these classes. By implementing the algorithms in ANSI C and comparing their execution times, we can make a quantitative statement about their performance</style></abstract><accession-num><style face="normal" font="default" size="100%">9461425</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Miguel Vega</style></author><author><style face="normal" font="default" size="100%">Javier Mateos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Parameter Estimation in Bayesian Reconstruction of Multispectral Images Using Super Resolution Techniques</style></title><secondary-title><style face="normal" font="default" size="100%">ICIP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/10/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/0001749.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Atlanta, Georgia</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Jian-wei Huang</style></author><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Pricing Based Collaborative Multi-User Video Streaming over Total Power Constrained Wireless Down Link</style></title><secondary-title><style face="normal" font="default" size="100%"> Proc. IEEE Intern. Conf. on Acoustics, Speech and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/05/2006</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Toulouse, France</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jian-wei Huang</style></author><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Mung Chiang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Pricing-based Rate Control and Joint Packet Scheduling for Multi-user Wireless Uplink Video Streaming</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 15th International Packet Video Workshop (PV2006)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">20/04/2006</style></date></pub-dates></dates></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Rate-Distortion Optimized Hybrid Error Control for Real-Time Packetized Video Transmission</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/RDOptHybrid_TIP_06.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">40-53</style></pages><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Andrew Segall</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Resampling for Spatial Scalability</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conf. on Image Processing</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Scalable Video Coding</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/10/2006</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Atlanta, GA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Spatiotemporal Algorithm for Joint Video Segmentation and Foreground Detection</style></title><secondary-title><style face="normal" font="default" size="100%">European Signal Processing Conference (EUSIPCO’06)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/camera_ready.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Florence, Italy</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Spatiotemporal Algorithms for Joint Background Subtraction and Video Segmentation</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical Engineering and Computer Science</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">Evanston</style></pub-location><pages><style face="normal" font="default" size="100%">85</style></pages><abstract><style face="normal" font="default" size="100%">Two fundamental tasks in computer vision and video processing applications are detection
of foreground objects by subtracting the background and video segmentation. In this thesis we
first present an overview of the approaches in the literature that are proposed to solve these
challenging problems. This is followed by presentation of two novel spatiotemporal algorithms
applicable to these problems with a stationary single camera systems. In the first part, we
present a novel probabilistic background modeling and subtraction method that exploits spatial
dependencies between pixels. By using an initial segmentation of the background scene, we
model each pixel by a mixture of spatiotemporal Gaussian distributions.


Using the ideas of the background model, we present a novel algorithm for segmenting
video sequences into objects with smooth surfaces. The segmentation of image planes in the
video is modeled as a spatial Gibbs-Markov random field and extension to 3D is accomplished
by the temporal labeling algorithm. Experimental results for indoor and outdoor surveillance
videos demonstrate the performance advantages of the proposed methods. Possible extensions
and applications are outlined and conclusions are drawn.</style></abstract><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nathan A. Woods</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Stochastic Methods for Joint Registration, Restoration, and Interpolation of Multiple Undersampled Images</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/StochReg_TIP_06.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">201-213</style></pages><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">R. Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">L. D. Alvarez</style></author><author><style face="normal" font="default" size="100%">J. Mateos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Towards a New Video Compression Scheme Using Super-resolution</style></title><secondary-title><style face="normal" font="default" size="100%">Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/01/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/vcip06.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Jose, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Shengyang Dai</style></author><author><style face="normal" font="default" size="100%">Ming Yang</style></author><author><style face="normal" font="default" size="100%">Ying Wu</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tracking Motion-Blurred Targets in Video</style></title><secondary-title><style face="normal" font="default" size="100%">special session on Knowledge-Based Image Processing for Classification and Recognition in Surveillance Applications, ICIP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/10/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/04107048.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Atlanta, Georgia</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">VAPOR: Variance-aware Per-pixel Optimal Resource Allocation</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">02/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/VAPOR_TIP_06.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">289-299</style></pages><issue><style face="normal" font="default" size="100%">2</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Advances in Efficient Resource Allocation for Packet-Based Real-Time Video Transmission</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Proceedings</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/ProcIEEE_Jan05.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">93</style></volume><pages><style face="normal" font="default" size="100%">135-147</style></pages><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Javier Mateos</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Approximations of Posterior Distributions in Blind Deconvolution Using Variational Methods</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing (ICIP 2005)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/09/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01530169.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">II- 770-773</style></pages><isbn><style face="normal" font="default" size="100%">0-7803-9134-9</style></isbn><abstract><style face="normal" font="default" size="100%">In this paper the blind deconvolution problem is formulated using the variational framework. With its use approximations of the involved probability distributions are developed resulting in two algorithms for the estimation of the posterior distributions of the hyperparameters, the blur, and the original image. The performance of the two proposed restoration algorithms is demonstrated experimentally.</style></abstract><accession-num><style face="normal" font="default" size="100%">8845648</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">P. Aleksic</style></author><author><style face="normal" font="default" size="100%">G. Potamianos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">A. Bovik</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Audio-Visual Signal Processing</style></title><secondary-title><style face="normal" font="default" size="100%">Handbook of Image and Video Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><section><style face="normal" font="default" size="100%">10.8</style></section><publisher><style face="normal" font="default" size="100%">Elsevier Academic Press</style></publisher><pages><style face="normal" font="default" size="100%">1263-1290</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">P. Aleksic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Automatic Facial Expression Recognition Using Facial Animation Parameters and Multi-Stream HMMs</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 6th European Workshop on Image Analysis for Multimedia Interactive Services</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">13/04/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/301.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Montreux, Switzerland</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">B. J. Lei</style></author><author><style face="normal" font="default" size="100%">E. A. Hendriks</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Nikos Sarris</style></author><author><style face="normal" font="default" size="100%">Michael G. Strintzis</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Camera Calibration for 3D Reconstruction and View Transformation</style></title><secondary-title><style face="normal" font="default" size="100%">3D Modeling and Animation: : Synthesis and Analysis Techniques for the Human Body</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><section><style face="normal" font="default" size="100%">3</style></section><publisher><style face="normal" font="default" size="100%">IRM Press</style></publisher><pages><style face="normal" font="default" size="100%">70-129</style></pages><isbn><style face="normal" font="default" size="100%">1591402999</style></isbn></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Petar S. Aleksic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Comparison of MPEG-4 Facial Animation Parameter Groups with Respect to Audio-Visual Speech Recognition Performance</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing (ICIP 2005)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/09/2005</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Genova, Italy</style></pub-location><volume><style face="normal" font="default" size="100%">3</style></volume><pages><style face="normal" font="default" size="100%">III- 501-504</style></pages><isbn><style face="normal" font="default" size="100%">0-7803-9134-9</style></isbn><abstract><style face="normal" font="default" size="100%">In this paper, we describe an audio-visual automatic speech recognition (AV-ASR) system that utilizes facial animation parameters (FAPs), supported by the MPEG-4 standard, for the visual representation of speech. We describe the visual feature extraction algorithms used for extracting FAPs, which control outer- and inner-lip movement. Principal component analysis (PCA) is performed on both inner- and outer-lip FAP vector in order to decrease their dimensionality and decorrelate them. The PCA-based projection weights of the extracted FAP vectors are used as visual features. Multi-stream hidden Markov models (HMMs) and a late integration approach are used to integrate audio and visual information and train a continuous AV-ASR system. We compare the performance of the developed AV-ASR system utilizing outer- and inner lip FAPs, individually and jointly. Experiments were performed for different dimensionalities of the visual features, at various SNRs (0-30dB) with additive white Gaussian noise, on a relatively large vocabulary (approximately 1000 words) database. The proposed system reduces the word error rate (WER) by 20% to 23% relatively to audio-only ASR WERs. Conclusions are drawn on the individual and combined effectiveness of the inner- and outer-lip FAPs, the trade off between the dimensionality of the visual features and the amount of speechreading information contained in them and its influence on the AV-ASR performance.</style></abstract><accession-num><style face="normal" font="default" size="100%">8856971</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">H. Wang</style></author><author><style face="normal" font="default" size="100%">F. Zhai</style></author><author><style face="normal" font="default" size="100%">Y. Eisenberg</style></author><author><style face="normal" font="default" size="100%">A. K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cost-Distortion Optimized Unequal Error Protection for Object-based Video Communications</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Dec. </style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/haohon2005.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">1505-1516</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">12</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cristina Costa</style></author><author><style face="normal" font="default" size="100%">Fabrizio Granelli</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Cross-Layer Approach for Energy Efficient Transmission of Progressively Coded Images over Wireless Channels</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing (ICIP 2005)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/09/2005</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Genova, Italy</style></pub-location><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">I- 213-216</style></pages><isbn><style face="normal" font="default" size="100%">0-7803-9134-9</style></isbn><abstract><style face="normal" font="default" size="100%">Mobility, made available by today's communication networks, imposes several limitations in the design of multimedia applications, due to high error rates, reduced bandwidth, strong variability, and mobile terminals lifetime. This paper investigates the use of an energy constrained cross-layer approach for the transmission of progressively coded images over packet-based wireless channels. We propose an optimum power allocation algorithm to enable unequal error protection of a pre-encoded image. Simulations are performed modeling transmission over a Rayleigh fading channel. The investigation focuses on JPEG2000, but it is applicable to other progressively coded bitstreams as well. Our experimental results demonstrate that it is possible to achieve a relevant performance enhancement with the proposed approach over uniform error protection. The optimal solution can also serve as a guideline for developing less computationally intensive empiric approaches.</style></abstract><accession-num><style face="normal" font="default" size="100%">8856954</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">On Designing DNA Databases for the Storage and Retrieval of Digital Signals</style></title><secondary-title><style face="normal" font="default" size="100%">International Conference on Natural Computation, special session on Recent Advances in Biomolecular Computing</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Lecture Notes in Computer Science</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">31/07/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/fulltext_0.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Springer Verlag</style></publisher><pub-location><style face="normal" font="default" size="100%">Changsha, China</style></pub-location><volume><style face="normal" font="default" size="100%">3611</style></volume><pages><style face="normal" font="default" size="100%">1192-1201</style></pages><abstract><style face="normal" font="default" size="100%">In this paper we propose a procedure for the storage and retrieval of digital signals utilizing DNA. Digital signals are encoded in DNA sequences that satisfy among other constraints the Noise Tolerance Constraint (NTC) that we have previously introduced. NTC takes into account the presence of noise in digital signals by exploiting the annealing between non-perfect complementary sequences. We discuss various issues arising from the development of DNA-based database solutions (i) in vitro (in test tubes, or other materials) for short-term storage and (ii) in vivo (inside organisms) for long-term storage. We discuss the benefits and drawbacks of each scheme and its effects on the codeword design problem and performance. We also propose a new way of constructing the database elements such that a short-term database can be converted into a long term one and vice versa without the need for a re-synthesis. The latter improves efficiency and reduces the cost of a long-term database.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Alan Q. Cheng</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Faisal Ishtiaq</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Distributed Video Summarization and Transmission Adaptation for Very Low Bit Rate Multiuser Wireless Uplink Video Communication</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. IEEE Int. Workshop on Multimedia Signal Processing (MMSP)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">30/10/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/04014036.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Shanghai, China</style></pub-location><pages><style face="normal" font="default" size="100%">1-4</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Peshala Pahalawatta</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Video Communications over Lossy Channels</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. Virtual observatories: Plate Content Digitization, Archive Mining and Image Sequence Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">27/04/2005</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Sofia, Bulgaria</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Energy Efficient Video Summarization and Transmission over a Slow Fading Wireless Channel</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Symp. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/01/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/299.PDF</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Jose, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Energy-Efficient Video Coding and Delivery</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Wireless Communications Magazine</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/EngyEffVid_WCOMM_05.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">12</style></volume><pages><style face="normal" font="default" size="100%">24-30</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Bhavan Gandhi</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fast Video Shot Retrieval Based on Trace Geometry Matching</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Proceedings on Vision, Image and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01459911.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">152</style></volume><pages><style face="normal" font="default" size="100%">367-373</style></pages><issue><style face="normal" font="default" size="100%">3</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Vassili Hatzimanikatis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">In silico estimation of annealing specificity of query searches in DNA databases</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Japan Society of Simulation Technology (JSST) special issue  &quot;Application and Simulation of DNA Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/2005</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">24</style></volume><pages><style face="normal" font="default" size="100%">268-276</style></pages><abstract><style face="normal" font="default" size="100%">We consider DNA implementations of databases for digital signals with retrieval and mining capabilities. Digital signals are encoded in DNA sequences and retrieval is achieved through annealing between query DNA primers and data carrying DNA target sequences. The hybridization between query and target can be non-specific containing multiple mismatches thus implementing similarity-based searches. In this paper we examine theoretically and by simulation the efficiency of such a system by estimating the concentrations of query-target duplex formations at equilibrium. A coupled kinetic model is used to estimate the concentrations. We offer a derivation that results in an equation that is guaranteed to have a solution and can be easily and accurately solved computationally with bisection root-finding methods. Finally, we also provide an approximate solution at dilute query concentrations that results in a closed form expression. This expression is used to improve the speed of the bi-section algorithm and also to find a closed form expression for the specificity ratios.</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ehsan Maani</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Integrated Joint Source-Channel Coding Framework for Video Transmission over Wireless Fading Channels</style></title><secondary-title><style face="normal" font="default" size="100%">43rd Annual Allerton Conference on Communication, Control, and Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">28/09/2005</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Monticello, IL</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Min-Cheol Hong</style></author><author><style face="normal" font="default" size="100%">Tania Stathaki</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Iterative Regularized Mixed Norm Multichannel Image Restoration Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Electronic Imaging</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/ItReg_JEI_05.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">1-9</style></pages><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Carlos E. Luna</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Source Coding and Packet Classification for Video Streaming over Differentiated Services Networks</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Multimedia</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/jscpktclass_TMM_05.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">716-726</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Source-Channel Coding and Power Adaptation for Energy Efficient Wireless Video Communications</style></title><secondary-title><style face="normal" font="default" size="100%">Signal Processing: Image Communications</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">02/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/jsccpa_spic_05.pdf</style></url></related-urls></urls></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Y. Eisenberg</style></author><author><style face="normal" font="default" size="100%">F. Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">A. Bovik</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Source-Channel Coding for Video Communications</style></title><secondary-title><style face="normal" font="default" size="100%">Handbook of Image and Video Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><publisher><style face="normal" font="default" size="100%">Elsevier Academic Press</style></publisher></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hongqiang Wang</style></author><author><style face="normal" font="default" size="100%">S. Derin Babacan</style></author><author><style face="normal" font="default" size="100%">Khalid Sayood</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Lossless Hyperspectral Image Compression Using Context-Based Conditional Averages</style></title><secondary-title><style face="normal" font="default" size="100%">Data Compression Conference (DCC'05)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/babacandcc05.pdf</style></url></related-urls></urls><pages><style face="normal" font="default" size="100%">418-426</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Bhavan Gandhi</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and apparatus for reduction of visual content</style></title><secondary-title><style face="normal" font="default" size="100%">6,963,378</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/11/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US6963378.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc.</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">At least one visual significance metric is determined (12) for at least some frames belonging to an original series of frames (11). Key frames are identified (13) as a function, at least in part, of the visual significance metric. Cumulative visual significance values are then determined (14) for at least some of the frames that intervene between each pair of key frames. These cumulative visual significance values are then used to identify (15) frames of additional content interest. Various frames are then selected (16) for use in a visual summary. In one embodiment, all of the key frames and frames of additional content interest are selected for inclusion in the visual summary.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MINMAX Optimal Video Summarization</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01512242.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">1245-1256</style></pages><issue><style face="normal" font="default" size="100%">10</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Stavros Tzavidas</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Multi-Camera Setup for Generating Stereo Panoramic Video</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Multimedia</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/MultCamSetup_TMM_05.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">880-890</style></pages><issue><style face="normal" font="default" size="100%">5</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Xiaohuan Li</style></author><author><style face="normal" font="default" size="100%">Joel R. Jackson</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Russell M. Mersereau</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multiple Global Affine Motion Model for H.264 Video Coding with Low Bit Rate</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Symp. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/01/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/298.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Jose, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A new Codeword Design Algorithm for DNA Based Storage and Retrieval of Digital Signals</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 11th Int. Meeting on DNA-based computers DNA 11</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/06/2005</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">London, Ontario, Canada</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Javier Mateos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Raul Zurita Milla</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">S. Liang</style></author><author><style face="normal" font="default" size="100%">J. Liu</style></author><author><style face="normal" font="default" size="100%">X. Li</style></author><author><style face="normal" font="default" size="100%">R. Liu</style></author><author><style face="normal" font="default" size="100%">M. Schaepman</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">A New super Resolution Bayesian Method for Pansharpening Landsat ETM+ Imagery</style></title><secondary-title><style face="normal" font="default" size="100%">9th International Symposium on Physical Measurements and Signatures in Remote Sensing (ISPMSRS)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Anewsuperresolution05.PDF</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Beijing, China</style></pub-location><pages><style face="normal" font="default" size="100%">280-283</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Reto Ansorge</style></author><author><style face="normal" font="default" size="100%">Erwin Kirchmeier</style></author><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Galatsanos</style></author><author><style face="normal" font="default" size="100%">Y. Yang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">A. Bovik</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Post-Processing for Compressed Images and Video</style></title><secondary-title><style face="normal" font="default" size="100%">Handbook of Image and Video Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><publisher><style face="normal" font="default" size="100%">Elsevier Academic Press</style></publisher></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Haohong Wang</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Rate-distortion Optimal Bit Allocation for Object-based Video Coding</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/RDOptBitAlloc_CSVT_05.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">1113-1123</style></pages><issue><style face="normal" font="default" size="100%">9</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Z. Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">G. Schuster</style></author><author><style face="normal" font="default" size="100%">B. Gandhi</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Y. P. Tan</style></author><author><style face="normal" font="default" size="100%">K. H. Yap</style></author><author><style face="normal" font="default" size="100%">L. Wang</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Rate-Distortion Optimal Video Summarization and Coding</style></title><secondary-title><style face="normal" font="default" size="100%">Intelligent Multimedia Processing with Soft Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><publisher><style face="normal" font="default" size="100%">Springer Verlag</style></publisher></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Bhavan Gandhi</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Rate-Distortion Optimal Video Summary Generation</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01510689.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">1550-1560</style></pages><issue><style face="normal" font="default" size="100%">10</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peshala V. Pahalawatta</style></author><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Rate-Distortion Optimization for Internet Video Summarization and Transmission</style></title><secondary-title><style face="normal" font="default" size="100%">special session on Content Aware Video Coding and Communication for Ubiquitous Adaptation</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Summary_mmsp.pdf</style></url></related-urls></urls></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peshala V. Pahalawatta</style></author><author><style face="normal" font="default" size="100%">Z. Li</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Rate-Distortion Optimized Video Summary Generation and Transmission over Packet Lossy Networks</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Symp. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/01/2005</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">San Jose, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Konstantinos Zachariadis</style></author><author><style face="normal" font="default" size="100%">Michael Honig</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Source Fidelity over Fading Channels: Erasure Codes versus Scalable Codes</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Globecom 2005</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01578223.pdf</style></url></related-urls></urls></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Jose Mateos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Super Resolution Reconstruction of Multispectral Images</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. Virtual observatories: Plate Content Digitization, Arhieve Mining and Image Sequence Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">27/04/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/303.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Sofia, Bulgaria</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhu Li</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Video summarization for multiple path communication</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Image Processing (ICIP 2005)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/09/2005</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01529723.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Genova, Italy</style></pub-location><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">205-208</style></pages><isbn><style face="normal" font="default" size="100%">0-7803-9134-9</style></isbn><abstract><style face="normal" font="default" size="100%">For video communications over wireless ad hoc networks, multiple paths with limited bandwidth are common. It therefore presents new challenges to the video encoding. In this paper, we formulate the problem as a multiple path video summarization problem under bit rate constraints, where video summaries are generated to satisfy each channel's rate constraint, while the combined summary at the receiving end achieves the minimum summarization distortion. The optimal solution (within a convex hull approximation) is found by Lagrangian relaxation and dynamic programming. Simulation results demonstrate the effectiveness of the approach.</style></abstract><accession-num><style face="normal" font="default" size="100%">8845933</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Xiaohuan Li</style></author><author><style face="normal" font="default" size="100%">Joel R. Jackson</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Russell M. Mersereau</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Adaptive Coding Scheme Using Affine Motion Model for MPEG V-POP</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/05/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/280.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Montreal, Canada</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Antonio Lopez</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Antonio Rodriguez</style></author><author><style face="normal" font="default" size="100%">Jose M. Lopez</style></author><author><style face="normal" font="default" size="100%">Jose M. Llamas</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bayesian Reconstruction of SPECT Images: an Aid in Nuclear Medicine Diagnosis</style></title><secondary-title><style face="normal" font="default" size="100%">International Journal of Imaging Systems and Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/lopez_imaging_systems.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">21-27</style></pages><issue><style face="normal" font="default" size="100%">1</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">C. Andrew Segall</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Javier Mateos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bayesian Resolution Enhancement of Compressed Video</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/BayResEnh_Segall04.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">898-911</style></pages><issue><style face="normal" font="default" size="100%">7</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Eren Soyak</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Randall Berry</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Channel Modeling and its Effects on the End-to-End Distortion in Wireless Video Communications</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. IEEE International Conf. on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">24/10/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/294.pdf</style></url></related-urls></urls></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Petar S. Aleksic</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Comparison of Low- and High-Level Visual Features for Audio-Visual Continuous Automatic Speech Recognition</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/05/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/282.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Montreal, Canada</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fan Zhai</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cross-Layer Resource Allocation for Video Transmission over Packet Lossy Networks</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">T. N. Pappas</style></author><author><style face="normal" font="default" size="100%">E. T. Papoutsakis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">DNA Based Matching of Digital Signals</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">17/05/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/277.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">581-584</style></pages><abstract><style face="normal" font="default" size="100%">Adleman with his pioneering work set the stage for the new field of bio-computing research (Science, vol.266, p.1021-1024, 1994). His main idea was to use actual chemistry to solve problems that are either unsolvable by conventional computers, or require an enormous amount of computation. The main focus of our research is to consider the application of molecular computing to the domain of digital signal processing (DSP). In this paper, we consider matching problems that arise in signal processing applications and are amenable to a DNA-based solution. Digital data are encoded in DNA sequences using a sophisticated codeword set that satisfies the noise tolerance constraint (NTC) that we introduce. NTC, one of the main contributions of our work, takes into account the presence of noise in digital signals by exploiting the annealing between non-perfect complementary sequences. We propose an algorithm to map binary values into DNA codewords by satisfying a number of constraints, including the NTC. Using that algorithm, we retrieved 128 codewords that enables us to use a DNA based approach to digital signal matching.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Eleftherios T. Papoutsakis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">DNA Computing from a signal processing viewpoint</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Signal Processing Magazine</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/SP_mag_1_04.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">21</style></volume><pages><style face="normal" font="default" size="100%">100-106</style></pages><abstract><style face="normal" font="default" size="100%">In this article, an analysis of Adleman's experiment and a review of DNA computing applications from a signal-processing point of view are provided. In addition, certain key parts of DNA computing are emphasized, such as the code word design, to which the application of signal processing theory and techniques can offer significant advantages. The goal of this article is to introduce to the signal processing community a new unexplored area of research.</style></abstract><issue><style face="normal" font="default" size="100%">5</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Energy Efficiency and the Role of Quality Metrics in Wireless Video Communications</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cristina E. Costa</style></author><author><style face="normal" font="default" size="100%">Yiftach Eisenberg</style></author><author><style face="normal" font="default" size="100%">Fan Zhai</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Energy Efficient Wireless Transmission of MPEG-4 Fine Granular Scalable Video</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. IEEE Int. Conf. on Communications</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">20/06/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/284.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Paris, France</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. Villena</style></author><author><style face="normal" font="default" size="100%">J. Abad</style></author><author><style face="normal" font="default" size="100%">Rafael Molina</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Estimation of high resolution images and registration parameters from low resolution observations</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 9th Iberoamerican Congress on Pattern Recognition</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">26/10/2004</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Puebla, Mexico</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Z. Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Bhavan Gandhi</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fast Video Shot Retrieval by Trace Geometry Matching in Principal Component Space</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 2004 IEEE International Conf. on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">24/10/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/288.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Singapore</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dimitrios Simitopoulos</style></author><author><style face="normal" font="default" size="100%">Sotirios A. Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Nikolaos V. Boulgouris</style></author><author><style face="normal" font="default" size="100%">Alexia Briassouli</style></author><author><style face="normal" font="default" size="100%">Michael G. Strintzis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fast watermarking of MPEG-1/2 streams using compressed-domain perceptual embedding and a generalized correlator detector</style></title><secondary-title><style face="normal" font="default" size="100%">EURASIP Journal on Applied Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2004</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/Tsaftaris_JASP_2004.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">8</style></volume><pages><style face="normal" font="default" size="100%">1088-1106</style></pages><abstract><style face="normal" font="default" size="100%">A novel technique is proposed for watermarking of MPEG-1 and MPEG-2 compressed video streams. The proposed scheme is applied directly in the domain of MPEG-1 system streams and MPEG-2 program streams (multiplexed streams). Perceptual models are used during the embedding process in order to avoid degradation of the video quality. The watermark is detected without the use of the original video sequence. A modified correlation-based detector is introduced that applies nonlinear preprocessing before correlation. Experimental evaluation demonstrates that the proposed scheme is able to withstand several common attacks. The resulting watermarking system is very fast and therefore suitable for copyright protection of compressed video.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">L. D. Alvarez</style></author><author><style face="normal" font="default" size="100%">R. 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Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Thrasyvoulos N. Pappas</style></author><author><style face="normal" font="default" size="100%">Eleftherios T. 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Tsaftaris</style></author><author><style face="normal" font="default" size="100%">Nikolaos V. Boulgouris</style></author><author><style face="normal" font="default" size="100%">Michael G. Strintzis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Compressed-domain video watermarking of MPEG streams</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Multimedia and Expo, 2002</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">26/08/2002</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/icme2002.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Lausanne, Switzerland</style></pub-location><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">569 - 572</style></pages><abstract><style face="normal" font="default" size="100%">A new technique for watermarking of MPEG compressed video streams is proposed. The watermarking scheme operates directly in the domain of MPEG program streams. Perceptual models are used during the embedding process in order to preserve the video quality. The watermark is embedded in the compressed domain and is detected without the use of the original video sequence. Experimental evaluation demonstrates that the proposed scheme is able to withstand a variety of attacks. The resulting watermarking system is fast and reliable, and is suitable for copyright protection and real-time content authentication applications.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Xiaohuan Li</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Guido M. 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Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Hyperparameter Estimation Using Hyperpriors for Hierarchical Bayesian Image Restoration from Partially-Known Blurs</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Bayesian Inference for Inverse Problems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/07/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/HEuHfHBIRfPKB.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Diego, CA</style></pub-location><volume><style face="normal" font="default" size="100%">3459</style></volume><pages><style face="normal" font="default" size="100%">337-348</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">J. Biemond</style></author><author><style face="normal" font="default" size="100%">E. Coyle</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Blind Image Restoration Using Local Constraints</style></title><secondary-title><style face="normal" font="default" size="100%">EUSIPCO-98</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/09/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/eusipco98b.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Rhodes, Greece</style></pub-location><pages><style face="normal" font="default" size="100%">335-338</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kaaren May</style></author><author><style face="normal" font="default" size="100%">Tania Stathaki</style></author><author><style face="normal" font="default" size="100%">Anthony Constantinides</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Iterative Regularized Mixed-Norm Image Restoration Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">28/01/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00613503_0.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Jose, CA</style></pub-location><volume><style face="normal" font="default" size="100%">3309</style></volume><pages><style face="normal" font="default" size="100%">603-614</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Lisimachos P. Kondi</style></author><author><style face="normal" font="default" size="100%">Fabian W. Meier</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Joint Optimal Object Shape Estimation and Encoding</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">28/01/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/vcip98a.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Jose, CA</style></pub-location><volume><style face="normal" font="default" size="100%">3309</style></volume><pages><style face="normal" font="default" size="100%">14-25</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Ozan Erdogan</style></author><author><style face="normal" font="default" size="100%">Cheung Auyeung</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and apparatus for spatially adaptive filtering for video encoding</style></title><secondary-title><style face="normal" font="default" size="100%">5,764,307</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/07/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US5764307.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc., Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">The present invention provides a method (200) and an apparatus (100) for spatially adaptive filtering for video encoding. The apparatus filters a video sequence prior the encoding process. The apparatus comprises a noise variance determiner (102), a local variance determiner (104), a noise visibility function determiner (106), a Gaussian kernel determiner (108), and a convolver (110). The apparatus removes noise directly from a Displaced Frame Difference, DFD, signal. This novel approach removes noise and miscellaneous high frequency components from the DFD signal without the introduction of the filtering artifacts characteristic of current techniques. By reducing the miscellaneous high frequency components, the present invention is capable of reducing the amount of information that must be encoded by the video encoder without substantially degrading the decoded video sequence.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Mark R. Banham</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and device for optimal bit allocation between different sources of information in digital video compression</style></title><secondary-title><style face="normal" font="default" size="100%">5,778,192</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/07/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US5778192_0.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc., Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">The present invention provides a method (200, 400) and device (500) for, within a variable or fixed block size video compression scheme, providing optimal bit allocation among at least three critical types of data: segmentation, motion vectors and prediction error, or DFD. Since the amount of information represented by one bit for a particular type of data is not equivalent to the information represented by one bit for some other data type, this consideration is taken into account to efficiently encode the video sequence. Thus, a computationally efficient method is provided for optimally encoding a given frame of a video sequence wherein, for a given bit budget the proposed encoding scheme leads to the smallest possible distortion and vice versa, for a given distortion, the proposed encoding scheme leads to the smallest possible rate.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and system for estimating motion within a video sequence</style></title><secondary-title><style face="normal" font="default" size="100%">5,717,463</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/02/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US5717463.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc.</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">A method and system for estimating the motion within a video sequence provides very accurate estimates of both the displacement vector field, as well as, the boundaries of moving objects. The system comprises a preprocessor (102), a spatially adaptive pixel motion estimator (104), a motion boundary estimator (106), and a motion analyzer (108). The preprocessor (102) provides a first estimate of the displacement vector field, and the spatially adaptive pixel motion estimator (104) provides a first estimate of object boundaries. The motion boundary estimator (106) and the motion analyzer (108) improve the accuracy of the first estimates.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mark R. Banham</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Stephen N. Levine</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method, device and microprocessor for selectively compressing video frames of a motion compensated prediction-based video codec</style></title><secondary-title><style face="normal" font="default" size="100%">5,764,921</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/07/1998</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US5764921.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc., Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">A method (100, 200), device (300) and microprocessor (400) are provided for selectively compressing video frames of a motion compensated prediction-based video codec based on a predetermined set of compression techniques. 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Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Regularized Image Restoration Using Local Constraints</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Workshop on Nonlinear Signal and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1997</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/09/1997</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/nsip97.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Mackinac Island, MI</style></pub-location><volume><style face="normal" font="default" size="100%">1</style></volume></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Min-Cheol Hong</style></author><author><style face="normal" font="default" size="100%">Moon G. Kang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Iterative Weighted Regularized Algorithm for Improving the Resolution of VIdeo Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conf. on Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1997</style></year><pub-dates><date><style  face="normal" font="default" size="100%">26/10/1997</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/icip97d.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Santa Barbara, CA</style></pub-location><pages><style face="normal" font="default" size="100%">II-474-477</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and apparatus for detecting occlusion</style></title><secondary-title><style face="normal" font="default" size="100%">5,612,745</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1997</style></year><pub-dates><date><style  face="normal" font="default" size="100%">18/03/1997</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US5612745.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">The present invention provides a method and apparatus for detecting occluded areas in a video frame. A previous displacement vector field, DVF, is motion compensated (402) and used to provide an occlusion test parameter (404) which is compared to an optimal threshold (408) to detect occluded areas. The optimal threshold is calculated based on the previous DVF and a predetermined threshold (406).</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Stephen N. Levine</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and system for improved motion compensation</style></title><secondary-title><style face="normal" font="default" size="100%">5,646,867</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1997</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/07/1997</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US5646867.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc.</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">The present invention provides a method (600) and system (100) for predicting a differential vector field. The method and system enable the detection and encoding of an area where motion compensating the past image frame to the current image frame, fails. Based on the DFD signal, the present invention detects regions where the motion compensation has failed (102). The boundaries of these regions are encoded and sent to the decoder (104). The intensity values contained in this region, by the current intensity frame, are also encoded and sent to the decoder. Based on the decoded region boundaries, the decoder decodes the intensity values and places them into the correct regions.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Guido M. Schuster</style></author><author><style face="normal" font="default" size="100%">Aggelos K. 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Tull</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Restoration of Fast Moving Objects in Dynamic Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">Optical Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/1996</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/TullKats_OE_96.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">35</style></volume><pages><style face="normal" font="default" size="100%">3460-3469</style></pages><issue><style face="normal" font="default" size="100%">12</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>25</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Method and apparatus for regenerating a dense motion vector field</style></title><secondary-title><style face="normal" font="default" size="100%">5,574,663</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/11/1996</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/US5574663.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Motorola, Inc.</style></publisher><pub-location><style face="normal" font="default" size="100%">United States</style></pub-location><abstract><style face="normal" font="default" size="100%">The present invention provides a method (300) and apparatus (100) for regenerating a dense motion vector field, which describes the motion between two temporally adjacent frames of a video sequence, utilizing a previous dense motion vector field. In this method, a spatial DVF and a temporal DVF are determined (302 and 304) and summed to provide a DVF prediction (306). This method and apparatus enables a dense motion vector field to be used in the encoding and decoding process of a video sequence. This is very important since a dense motion vector field provides a much higher quality prediction of the current frame as compared to the standard block matching motion estimation techniques. The problem to date with utilizing a dense motion vector field is that the information contained in a dense motion field is too large to transmit. The present invention eliminates the need to transmit any motion information.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">T. S. Huang</style></author><author><style face="normal" font="default" size="100%">R. 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Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Alan V. Sahakian</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Maximum a Posteriori Displacement Field Estimation in Quantum-Limited Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><pages><style face="normal" font="default" size="100%">396-407</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Motion Compensated Coding of Image Sequences Without Transmitting Motion Vectors</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1993 Conf. on Data Compression</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1992</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Snowbird, Utah</style></pub-location><pages><style face="normal" font="default" size="100%">469</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mun Gi Choi</style></author><author><style face="normal" font="default" size="100%">Ozan E. Erdogan</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multichannel Regularized Iterative Restoration of Motion Compensated Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/JCVPR96.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><pages><style face="normal" font="default" size="100%">1486-1497</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mark R. Banham</style></author><author><style face="normal" font="default" size="100%">Hector Gonzalez</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multichannel Restoration of Single Channel Images Using Wavelet Decomposition</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1993 Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/04/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Minneapolis, MN</style></pub-location><pages><style face="normal" font="default" size="100%">V-281-284</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recovery of Low Bit Rate Compressed Images Using Gibbs Priors</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 31st Annual Allerton Conf. on Commun., Control and Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Monticello, IL</style></pub-location><pages><style face="normal" font="default" size="100%">473-482</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recursive displacement estimation and restoration of noisy-blurredimage sequences</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1993 Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/04/1993</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00319800.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Minneapolis, MN</style></pub-location><pages><style face="normal" font="default" size="100%">V-273-276</style></pages><abstract><style face="normal" font="default" size="100%">A recursive model-based maximum a posteriori (MAP) estimator that simultaneously estimates the displacement vector field (DVF) and intensity field from a noisy-blurred image sequence is developed. By simultaneously estimating these two fields, information is made available to each filter regarding the reliability of estimates that they are dependent upon. Nonstationary models are used for the DVF and the intensity field in the proposed estimator, thus avoiding the smoothing of boundaries present in both. The advantage of the proposed SDIE (simultaneous displacement and intensity field estimation) algorithm is that the error inherent in estimating the DVF is taken into account in the filtering of the intensity field. A second advantage is that, through the use of the nonstationary VCGM (vector coupled Gauss-Markov) and STCGM (spatiotemporal coupled Gauss-Markov) models, boundaries in both the DVF and the intensity fields are preserved. The performance of the proposed SDIE algorithm was shown to be superior to that of the Wiener-based PR algorithm and the 2-D Kalman filter in estimating the DVF and intensity field, respectively, from a noisy-blurred image sequence</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recursive Displacement Estimation for Use in Multiple Object Tracking</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1993 IEEE Military Comm. Conf.</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1993</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00408620-1.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">485-489</style></pages><abstract><style face="normal" font="default" size="100%">The authors develop a recursive model-based maximum a posteriori (MAP) estimator that estimates the displacement vector field (DVF) from a noisy image sequence. To model the DVF, they develop a nonstationary vector field model called the vector coupled Gauss-Markov (VCGM) model. The VCGM model consists of two levels, an upper level, which is made up of several submodels with various characteristics, and a lower level or line process which governs the transitions between the submodels. By estimating the line process the authors segment the DVF along its motion boundaries, which is a critical step in the tracking of objects through a video sequence</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recursive Displacement Field Estimation with Application to Image Sequence Processing</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cheuk L Chan</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Alan V. Sahakian</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recursive Locally Linear MMSE Motion-Compensated Image Sequence Filtering under Quantum-Limited Conditions</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Visual Communication and Image Representation</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/1993</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/recursive93.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">349-363</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recursive MAP Displacement Estimation and Restoration of Noisy-Blurred Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1/11/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><pages><style face="normal" font="default" size="100%">384-395</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">J. A. Goyette</style></author><author><style face="normal" font="default" size="100%">G. D. Lapin</style></author><author><style face="normal" font="default" size="100%">M. G. Kang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regularized Iterative Image Restoration Algorithms Applied to Autoradiography</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. IEEE EMBS</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1993</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00978652.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">490-491</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Moon G. Kang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regularized Iterative Image Restoration Based on an Iterative Updated Convex Smoothing Functional</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1/11/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Boston,MA</style></pub-location><pages><style face="normal" font="default" size="100%">1364-1375</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Yongyi Yang</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regularized Reconstruction to Reduce Blocking Artifacts of Block Discrete Cosine Transform Compressed Images</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/93</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/IEEETransCASforVideo93.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">3</style></volume><pages><style face="normal" font="default" size="100%">421-432</style></pages><issue><style face="normal" font="default" size="100%">6</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Yongyi Yang</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regularized Reconstruction to Remove Blocking Artifacts from Block Discrete Cosine Transform Compressed Images</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1993</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/GetPDFServlet_0.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><pages><style face="normal" font="default" size="100%">511-522</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Robust Displacement Field Estimation in Noisy-Blurred Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 8th Workshop on IMDSP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Nice, France</style></pub-location><pages><style face="normal" font="default" size="100%">132-133</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Robust Motion Vector Prediction Algorithms with Application to Very Low Bit Rate Sequence Coding</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1/11/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Boston, Ma</style></pub-location><pages><style face="normal" font="default" size="100%">1378-1389</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Two Possible Approaches to Restoration of HST Images</style></title><secondary-title><style face="normal" font="default" size="100%">Newsletter of STScI's Image Restoration Project</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/07/1993</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Baltimore, MD</style></pub-location><pages><style face="normal" font="default" size="100%">30-37</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seraphim N. Efstratiadis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adaptive Multiple-Input Constrained Pel-Recursive Displacement Estimation</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1992 Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00226205.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Francisco, CA</style></pub-location><pages><style face="normal" font="default" size="100%">III-245-III-248</style></pages><abstract><style face="normal" font="default" size="100%">An adaptive multiple-input pel-recursive algorithm is presented. The displacement vector field (DVF) is estimated by minimizing the linearized displaced frame difference (DFD) using ν submasks of causal mask around the working point. Then, ν corresponding systems of equations are formed and the set theoretic regularization approach results in a weighted constrained least-squares estimation of the DVF by using information about the variance of the linearization error (noise) and the solution. The prior information about the solution is incorporated into the algorithm using a causal oriented smoothness constraint (OSC), which also provides a spatial prediction model for the estimated DVF. The improved performance of the proposed algorithm with respect to accuracy, robustness to occlusion, and smoothness of the estimated DVF is demonstrated</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Analysis of Regularized Linear Image Recovery</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. Signal Recovery and Synthesis IV, Optical Society of America</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/04/1992</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">New Orleans, LA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Displacement Field Estimation in Noisy Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. EUSIPCO-92</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/08/1992</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Brussels, Belgium</style></pub-location><pages><style face="normal" font="default" size="100%">1319-1322</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Displacement Field Estimation Using a Compound Gauss-Markov Model</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. Optical Engineering Midwest</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1992</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Chicago, IL</style></pub-location><volume><style face="normal" font="default" size="100%">1778</style></volume><pages><style face="normal" font="default" size="100%">170-181</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joon K. Paik</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Edge Detection Using Multi-State Adalines</style></title><secondary-title><style face="normal" font="default" size="100%">Pattern Recognition</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/sdarticle.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">25</style></volume><pages><style face="normal" font="default" size="100%">1495-1504</style></pages><issue><style face="normal" font="default" size="100%">12</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cheuk L Chan</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Alan V. Sahakian</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Enhancement of low-dosage cine-angiographic image sequences using a modified expectation maximization algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1992 SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI000290-1.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><volume><style face="normal" font="default" size="100%">1818</style></volume><abstract><style face="normal" font="default" size="100%">Clinical x-ray image sequences acquired through fluoroscopy systems may be corrupted by quantum mottle--a Poisson-distributed, signal-dependent noise that arises with a controlled x- ray dosage reduction in an attempt to lower the exposure to the patient and the medical staff. In this paper, an approach to temporally filter this sequence is presented. It relies on a joint estimation of the signal and the displacement field through a maximum likelihood approach. Implementation is done via a modified EM algorithm to facilitate a more tractable solution. </style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Moon Gi Kang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Frequency Domain Adaptive Iterative Image Restoration and Evaluation of the Regularization Parameter</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1992 SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI001414.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><volume><style face="normal" font="default" size="100%">1818</style></volume><pages><style face="normal" font="default" size="100%">1414-1424</style></pages><abstract><style face="normal" font="default" size="100%">In this paper a nonlinear frequency domain adaptive regularized iterative image restoration algorithm is proposed, according to which the regularization parameter is frequency dependent and is updated at each iteration step. The development of the algorithm is based on a set theoretical regularization approach, where bounds on the error residual and the stabilizing functional are updated in the frequency domain at each iteration step. Sufficient conditions for the convergence of the algorithm are derived and experimental results are shown. </style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joon K. Paik</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Image Restoration Using a Modified Hopfield Network</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/IEEETransIP92a.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">49-63</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taner Ozcelik</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Image Restoration Using Maximum Likelihood and Cross Validation</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Moon Gi Kang</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Evaluation of the Regularization Parameter in Regularized Image Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Visual Comm. and Image Representation, special issue on Image Restoration</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/JournalVCIR.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">3</style></volume><pages><style face="normal" font="default" size="100%">446-455</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nikolaos P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Methods for Choosing the Regularization Parameter and Estimating the Noise Variance in Image Restoration and their Relation</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">July 1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/IEEETransIP92b.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">322-336</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seraphim N. Efstratiadis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Motion Compensated Recursive Filtering of Noisy Displacement Fields</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. EUSIPCO-92</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/08/1992</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Brussels, Belgium</style></pub-location><pages><style face="normal" font="default" size="100%">1315-1319</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Kuen Tsair Lay</style></author><author><style face="normal" font="default" size="100%">W. Zhu</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multi-Channel Image Identification and Restoration Based on the EM Algorithm and Cross-Validation</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Inverse Problems in Scattering and Imaging</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/07/1992</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%"> San Diego, CA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seraphim N. Efstratiadis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nonstationary AR Modeling and Constrained Recursive Estimation of the Displacement Field</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Circuits and Systems for Video Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/IEEETransCASforVideo92.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">334-346</style></pages><issue><style face="normal" font="default" size="100%">4</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wenwu Zhu</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regularized Multi-Channel Image Restoration Using Cross-Validation</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1992 SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI000345.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><volume><style face="normal" font="default" size="100%">1818</style></volume><pages><style face="normal" font="default" size="100%">345-356</style></pages><abstract><style face="normal" font="default" size="100%">Multichannel images are the multiple image planes (channels) obtained by imaging the same scene using multiple sensors. The validity of multichannel restoration where both the within and between channel relations are incorporated has already been established using both stochastic and deterministic restoration filters. However, it has been demonstrated that stochastic multichannel filters are extremely sensitive to the estimates of the between channel statistics. In this paper deterministic multichannel filters are proposed that do not utilize any prior knowledge about the multichannel image and the noise. Regularization based on the multichannel Cross-Validation function is used to obtain these filters. Their relation to stochastic multichannel restoration filters is examined and a technique to estimate the variance of the multichannel noise is proposed. Finally, experiments are shown where proposed filters and noise variance estimators are tested using color images. </style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ozan Erdogan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Restoration of Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S. Project</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mark R. Banham</style></author><author><style face="normal" font="default" size="100%">Nikolas P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Hector Gonzalez</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Restoration of Single Channel Images with Multichannel Filtering in the Wavelet Domain</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. IEEE Int'l. Conf. Syst., Man, and Cyber.</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00271518.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Chicago, IL</style></pub-location><pages><style face="normal" font="default" size="100%">1558-1563</style></pages><abstract><style face="normal" font="default" size="100%">The authors develop a multi-channel formulation of a single-channel filtering problem in the wavelet domain. This technique is based on an orthogonal matrix representation of the 2-D separable wavelet transform. It is shown that semiblock circulant structures resulting from a similarity transformation with this matrix operator permit a multi-channel treatment of a noisy blurred image, yielding an adaptive restoration technique in the wavelet frequency domain. A novel formulation of the 2-D separable wavelet decomposition is presented that clearly produces matrices which may be block-diagonalized with an array Fourier transform. Some experimental results based on the implementation of the wavelet-based multi-channel filtering methods discussed are presented. The method described offers much potential for improved adaptive image restoration in the wavelet domain</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Moon Gi Kang</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Simultaneous Iterative Image Restoration and Evaluation of the Regularization Parameter,</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Trans. Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/IEEETransSP92.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">40</style></volume><pages><style face="normal" font="default" size="100%">2329-2334</style></pages><issue><style face="normal" font="default" size="100%">9</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Simultaneous Recursive Displacement Estimation and Restoration of Image Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. IEEE Int'l. Conf. Syst., Man, and Cyber.</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00271515.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Chicago, IL</style></pub-location><pages><style face="normal" font="default" size="100%">1574-1579</style></pages><abstract><style face="normal" font="default" size="100%">The authors develop a recursive-model-based maximum a posteriori estimator that simultaneously estimates the displacement vector field (DVF) and intensity field from a noisy-blurred image sequence. Current motion-compensated spatio-temporal filters treat the estimation of the DVF as a preprocessing step. Therefore, no attempt is made to verify the accuracy of these estimates prior to their use in the filter. By simultaneously estimating these two fields, information is made available to each filter regarding the reliability of the estimates on which they are dependent. Nonstationary models are used for the DVF and the intensity field in the proposed estimator, thus avoiding the smoothing of boundaries present in both. Experimental results are provided which show the effectiveness of the proposed estimator</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">S. P. R  Kumar</style></author><author><style face="normal" font="default" size="100%">Majid Sarrafzadeh</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">VLSI Architectures for Iterative Image Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Circuits, Systems, and Computers</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/1992</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">265-280</style></pages><issue><style face="normal" font="default" size="100%">3</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mark R. Banham</style></author><author><style face="normal" font="default" size="100%">James C. Brailean</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Wavelet Transform Image Sequence Coder Using Nonstationary Displacement Estimation</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1992 SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI000210.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><volume><style face="normal" font="default" size="100%">1818</style></volume><pages><style face="normal" font="default" size="100%">210-221</style></pages><abstract><style face="normal" font="default" size="100%">In this paper, we present a novel coding technique which makes use of the nonstationary characteristics of an image sequence displacement field to estimate and encode motion information. In addition, we develop a wavelet transform approach using cross-scale vector quantization to encode single frames during periods of high motion and scene changes. The objective of this design is to demonstrate the coding potential of a newly developed motion estimator called the Compound Linearized MAP (CLMAP) estimator. This estimator can be used as a means for producing motion vectors which may be regenerated at the decoder with a coarsely quantized error term created in the encoder. The motion estimator generates highly accurate motion estimates. This permits the elimination of a separately coded displaced frame difference (DFD) and coded motion vectors. We exploit both the advantages of the nonstationary motion estimator and the edge preserving quality of the wavelet based still frame coder to improve the visual quality of reconstructed video-conferencing image sequences, at low bit rates. </style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seraphim N. Efstratiadis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adaptive Constrained recursive Displacement Field and Image Sequence Estimation</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">S. N. Efstratiadis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adaptive Constrained Recursive Motion Field and Iamge Sequence Estimation</style></title><secondary-title><style face="normal" font="default" size="100%">Department of EECS</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/EfstratiadisPhD1991-100dpi-B3.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><pub-location><style face="normal" font="default" size="100%">Evanston</style></pub-location><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Richard P. Kleihorst</style></author><author><style face="normal" font="default" size="100%">Serafim N. Efstratiadis</style></author><author><style face="normal" font="default" size="100%">Reginald L. Lagendijk</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adaptive Image Sequence Noise Filtering Methods</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1991 SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1991</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI000716.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><volume><style face="normal" font="default" size="100%">1606,</style></volume><abstract><style face="normal" font="default" size="100%">Two adaptive approaches for nonstationary filtering of image sequences are presented and experimentally compared. According to the first approach, a recursive spatio-temporal motion- compensated (MC) estimator is applied to the noisy sequence that adapts to the local spatial and temporal signal activity. A separable 3-D estimator is proposed that consists of three coupled 1-D estimators; its input is the noisy image plus additional signals that contain spatial information provided by a simple edge-detector or temporal information provided by the MC backward difference (registration error). The steady-state gain and the parameters of this separable estimator are computed by closed form formulae, thus allowing a very efficient implementation. According to the second approach, the noisy signal is first decomposed into a stationary and a nonstationary part based on an estimate of its local mean and deviation. A minimum variance estimator of the local mean and deviation of the observed signal is used. After the current mean is subtracted from the observed signal and the signal is normalized by using the current deviation, a relatively simple noise filter is used for filtering the stationary part. The above methods are applied to the filtering of noisy video-conference image sequences for various levels of noise. Both methods show a very satisfactory performance taking into consideration their simplicity and computational efficiency. </style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dong-Joon Shin</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adaptive Interpolation Schemes for Digital Angiographic Sequences</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Serafim N. Efstratiadis</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adaptive Multiple-Input Pel-Recursive Motion Estimation</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 7th Workshop on MDSP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1991</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Lake Placid, NY</style></pub-location><pages><style face="normal" font="default" size="100%"> 5.6</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kuen Tsair Lay</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Blur Identification and Image Restoration Using the EM Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">Ph.D.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">H. Gonzalez</style></author><author><style face="normal" font="default" size="100%">Nikolaos P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cross-Validation and Maximum Likelihood Space-Varying Regularized Image Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 7th Workshop on MDSP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1991</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00639290-1.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Lake Placid, NY</style></pub-location><pages><style face="normal" font="default" size="100%">1.6a-1.6b</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nikolaos P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cross-Validation and Other Criteria for Estimating the Regularization Parameter and the Noise Variance</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1991 Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/05/1991</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Toronto, Canada</style></pub-location><pages><style face="normal" font="default" size="100%">3021-3024</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>6</ref-type><contributors><secondary-authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Digital Image Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Springer Series in Information Sciences</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><publisher><style face="normal" font="default" size="100%">Springer-Verlag</style></publisher><volume><style face="normal" font="default" size="100%">23</style></volume><isbn><style face="normal" font="default" size="100%">978-0387532929</style></isbn></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Brian C. Tom</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Elastic Registration of Skeletons</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S. Project</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">K. T. Lay</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Identification and Restoration of Images Using the Expectation Maximization Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Digital Image Restoration</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><section><style face="normal" font="default" size="100%">6</style></section><publisher><style face="normal" font="default" size="100%">Springer-Verlag</style></publisher><pages><style face="normal" font="default" size="100%">143-176</style></pages><isbn><style face="normal" font="default" size="100%">978-0387532929</style></isbn></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Moon Gi Kang</style></author><author><style face="normal" font="default" size="100%">Kuen-Tsair Lay</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Image Restoration Algorithms Based on the Bispectrum</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1991 SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1991</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI000408.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><volume><style face="normal" font="default" size="100%">1606</style></volume><pages><style face="normal" font="default" size="100%">408-418</style></pages><abstract><style face="normal" font="default" size="100%">In this paper we propose two algorithms for the restoration of images based on the bispectrum. The bispectrum of a signal is the Fourier transform of its triple correlation. While second- order statistics (e.g., correlation function, power spectrum, etc.) do not provide any information about the phase of the signal, third-order statistics (e.g., triple correlation, bispectrum, etc.) allow the recovery of the phase of the signal. We propose two algorithms for estimating the magnitude and the phase of the image, where the ambiguity due to the use of the principal value of the phase component is taken into account. Image lines are used in our experiments to test the effectiveness of the proposed algorithms. </style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gregory J. Alexopoulos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Inbetweening Techniques with Free-Form Deformations for Computer Animation</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Introduction: Review of Image Restoration Algorithms</style></title><secondary-title><style face="normal" font="default" size="100%">Digital Image Restoration</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><section><style face="normal" font="default" size="100%">1</style></section><publisher><style face="normal" font="default" size="100%">Springer-Verlag</style></publisher><pages><style face="normal" font="default" size="100%">1-20</style></pages><isbn><style face="normal" font="default" size="100%">978-0387532929</style></isbn></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nikolaos P. 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Hueter</style></author><author><style face="normal" font="default" size="100%">Thomas Frohlich</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Motion Estimation in Digital Angiographic Images Using Skeletons</style></title><secondary-title><style face="normal" font="default" size="100%">Optical Engineering Midwest Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1990</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI000032.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">1396</style></volume><pages><style face="normal" font="default" size="100%">32-44</style></pages><abstract><style face="normal" font="default" size="100%">This paper deals with the estimation of the motion field in digital angiographic sequences. An approach is developed according to which each frame is first segmented into a moving object of interest and the background. The original images are converted into binary images by using a Gaussian smoothing filter and thresholding. In the binary images pixels in moving objects have the value of &quot; 1&quot; and pixels in the background have the value of &quot; 0&quot; . The moving objects in the binary images are thinned to skeletons with unit width by using the Safe-Point Thinning Algorithm (SPTA) with restriction windows we introduce. Then a block-matching algorithm is used in estimating the motion for the pixels which belong to the skeleton. This approach to motion estimation results in reduced computations since only binary multiplications need to be performed for determining the match between two blocks. Therefore an effective searching method is proposed for finding the direction of displacement in successive skeleton frames. Very satisfactory results are obtained by applying the algorithm to 64 x 64. pixel digital angiographic image sequences</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jaeyoung Kwak</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Motion Estimation Using Skeletons</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S.</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multiple input adaptive image restoration algorithms</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1990</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI001381-1.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Lausanne, Switzerland</style></pub-location><volume><style face="normal" font="default" size="100%">1360</style></volume><pages><style face="normal" font="default" size="100%">1381-1392</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Multiple Input Image Restoration Approach</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Visual Comm. and Image Representation</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/1990</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/19308.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">93-103</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">B. J. Sullivan</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A New Termination Rule for Linear Iterative Image Restoration Algorithms</style></title><secondary-title><style face="normal" font="default" size="100%">Optical Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">05/1990</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/GetPDFServlet_1.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">29</style></volume><pages><style face="normal" font="default" size="100%">471-477</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Tomas E. DeRoux</style></author><author><style face="normal" font="default" size="100%">Michel E. Marhic</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Optical methods for iterative image restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1990</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI001428.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Lausanne, Switzerland</style></pub-location><volume><style face="normal" font="default" size="100%">1360</style></volume><pages><style face="normal" font="default" size="100%">1428-1439</style></pages><abstract><style face="normal" font="default" size="100%">A new totally optical approach to the implementation of iterative algorithms for image restoration is proposed. A phase conjugating mirror (PCM) is employed as an amplifying element to implement a coherent optical feedback system capable of performing iterative operations on a spatially modulated input beam. Three systems are suggested. Their optical analysis is performed. The obtained results indicate that each system is capable of restoring linearly degraded images </style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joon K. Paik</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Parallel and Distributed Image Restoration Using a Modified Hopfield Network</style></title><secondary-title><style face="normal" font="default" size="100%">SPIE/SPSE Symposium on Electronic Imaging</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/02/1990</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Santa Clara, CA</style></pub-location><volume><style face="normal" font="default" size="100%">1246</style></volume><pages><style face="normal" font="default" size="100%">298-307</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">M. Sarrafzadeh</style></author><author><style face="normal" font="default" size="100%">S. P. R  Kumar</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Parallel Architectures for an Iterative Image Restoration Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1990 Int. Symp.on Circuits and Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/05/1990</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00112542.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">New Orleans, LA</style></pub-location><pages><style face="normal" font="default" size="100%">2605-2609</style></pages><abstract><style face="normal" font="default" size="100%">Mesh of pyramids and pyramid of meshes implementations of an iterative image-restoration algorithm are proposed. These implementations are based on a single-step regularized iterative restoration algorithm. Both architectures are described as a composition of a mesh and a pyramid. They are compared in terms of area of the VLSI chip and its computation time</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nikolaos P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Properties of Different Estimates of the Regularization Parameter for the Least Squares Image Restoration Problem</style></title><secondary-title><style face="normal" font="default" size="100%">Optical Engineering Midwest Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1990</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">1396</style></volume><pages><style face="normal" font="default" size="100%">590-600</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Barry J. Sullivan</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regularized Signal Restoration and Spectral Filter Analysis</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1990 Conf. Inf. Sciences and Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1990</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Princeton, NJ</style></pub-location><pages><style face="normal" font="default" size="100%">439-442,</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nikolaos P. Galatsanos</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">On the Relation of Cross-Validation and Alternative Criteria to Estimate the Regularization Parameter</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 28th Annual Allerton Conf. on Commun., Control and Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1990</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Monticello, IL</style></pub-location><pages><style face="normal" font="default" size="100%">1061-1062</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cheuk L Chan</style></author><author><style face="normal" font="default" size="100%">Barry J. Sullivan</style></author><author><style face="normal" font="default" size="100%">Alan V. Sahakian</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Steven Swiryn</style></author><author><style face="normal" font="default" size="100%">David C. Hueter</style></author><author><style face="normal" font="default" size="100%">Thomas Frohlich</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Simulation of Quantum Mottle in Digital Angiographic Images</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 1990 SPIE/SPSE Symposium on Electronic Imaging</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1990</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/02/1990</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/PSI000104.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Santa Clara, CA</style></pub-location><volume><style face="normal" font="default" size="100%">1245</style></volume><pages><style face="normal" font="default" size="100%">104-110</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seraphim N. Efstratiadis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adaptive Restoration of Regionally Blurred Noisy Images</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of Conference on Information Sciences and Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1989</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">The Johns Hopkins University, Baltimore, MD</style></pub-location><pages><style face="normal" font="default" size="100%">650-656</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Kuen T. Lay</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Identification and Restoration of Images</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1989</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Philadelphia, PA</style></pub-location><volume><style face="normal" font="default" size="100%">1199</style></volume></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Image Restoration Algorithms</style></title><secondary-title><style face="normal" font="default" size="100%">Optical Engineering, special issue on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">00/1989</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/SPIE_OE98a.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">SPIE</style></publisher><volume><style face="normal" font="default" size="100%">28</style></volume><pages><style face="normal" font="default" size="100%">735-748</style></pages><abstract><style face="normal" font="default" size="100%">This tutorial paper discusses the use of successive-approximation-based iterative restoration algorithms for the removal of linear blurs and noise from images. Iterative algorithms are particularly attractive for this application because they allow for the incorporation of prior knowledge about the class of feasible solutions, because they can be used to remove nonstationary blurs, and because they are fairly robust with respect to errors in the approximation of the blurring operator. Regularization is introduced as a means for preventing the excessive noise magnification that is typically associated with ill-posed inverse problems such as the deblurring problem. Iterative algorithms with higher convergence rates and a multistep iterative algorithm are also discussed. A number of examples are presented.</style></abstract><issue><style face="normal" font="default" size="100%">7</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Maximum Likelihood Image Identification and Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Optical Engineering Midwest Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1989</style></date></pub-dates></dates></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kuen T. Lay</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Maximum Likelihood Image Identification and Restoration Based on the EM Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Conference on Information Sciences and Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1989</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">The Johns Hopkins University, Baltimore, MD</style></pub-location><pages><style face="normal" font="default" size="100%">656-662</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Maximum Likelihood Image Identification and Restoration Based on the EM Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">6th Workshop on MDSP</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1989</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/00097107-2.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Monterey, Canada</style></pub-location><pages><style face="normal" font="default" size="100%">183-184</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seraphim N. Efstratiadis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multiple Frame Formulation of the Pel-Recursive Motion Estimation Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. 27th Annual Allerton Conf. on Commun., Control and Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1989</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Monticello, IL</style></pub-location><pages><style face="normal" font="default" size="100%">1007-1016</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Seraphim N. Efstratiadis</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Multiple Frame Pel-Recursive Wiener-Based Displacement Estimation Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. SPIE Conf. on Visual Communications and Image Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/11/1989</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Philadelphia, PA</style></pub-location><volume><style face="normal" font="default" size="100%">1199</style></volume><pages><style face="normal" font="default" size="100%">51-60</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Leonid Tokman</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nonlinear Iterative Signal Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Department of Electrical and Computer Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1989</style></year></dates><publisher><style face="normal" font="default" size="100%">Northwestern University</style></publisher><work-type><style face="normal" font="default" size="100%">M.S. 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Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A General Formulation of Adaptive Iterative Image Restoration Algorithms</style></title><secondary-title><style face="normal" font="default" size="100%">Conf. Inf. Sciences and Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1986</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1986</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Princeton, NJ</style></pub-location><pages><style face="normal" font="default" size="100%">42-47</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multiple Input Restoration Algorithms</style></title><secondary-title><style face="normal" font="default" size="100%">SIAM Conf. on Linear Algebra in Signals, Systems and Control</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1986</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/08/1986</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">S. P. R  Kumar</style></author><author><style face="normal" font="default" size="100%">M. R. Samatham</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">VLSI Implementation of an Iterative Restoration Algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Int. Conf. Sys. Man, and Cybern.</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1986</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/10/1986</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Atlanta, GA</style></pub-location><pages><style face="normal" font="default" size="100%">313-318</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">J. Biemond</style></author><author><style face="normal" font="default" size="100%">R. M. Mersereau</style></author><author><style face="normal" font="default" size="100%">R. W. Schafer</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A General Formulation of Constrained Iterative Restoration Algorithms</style></title><secondary-title><style face="normal" font="default" size="100%">Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1985</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1985</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01168356.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Tampa, FL</style></pub-location><pages><style face="normal" font="default" size="100%">700-703</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">J. Biemond</style></author><author><style face="normal" font="default" size="100%">R. M. Mersereau</style></author><author><style face="normal" font="default" size="100%">R. W. Schafer</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nonstationary Iterative Image Restoration</style></title><secondary-title><style face="normal" font="default" size="100%">Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1985</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1985</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01168355.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Tampa, FL</style></pub-location><pages><style face="normal" font="default" size="100%">696-699</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">J. Biemond</style></author><author><style face="normal" font="default" size="100%">R. M. Mersereau</style></author><author><style face="normal" font="default" size="100%">R. W. Schafer</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Iterative Method for Restoring Noisy Blurred Images</style></title><secondary-title><style face="normal" font="default" size="100%">Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1984</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/03/1984</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01172773.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">San Diego, CA</style></pub-location><pages><style face="normal" font="default" size="100%">37.2.1-37.2.4</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">J. Biemond</style></author><author><style face="normal" font="default" size="100%">R. M. Mersereau</style></author><author><style face="normal" font="default" size="100%">R. W. Schafer</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Iterative Method for Restoring Noisy Blurred Images</style></title><secondary-title><style face="normal" font="default" size="100%">Circuits Systems and Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1984</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/1984</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/content/hkp723830v7w9p63/</style></url></web-urls></urls><section><style face="normal" font="default" size="100%">139</style></section><publisher><style face="normal" font="default" size="100%">Birkhäuser Boston</style></publisher><volume><style face="normal" font="default" size="100%">3</style></volume><pages><style face="normal" font="default" size="100%">139-160</style></pages><abstract><style face="normal" font="default" size="100%">This paper introduces a new iterative image restoration method which is capable of restoring noisy blurred images by incorporatinga priori knowledge about the image and noise statistics into the iterative procedure. The iteration equation consists of a prediction part which is based on a 
noncausal image model description and an innovation part which is weighted by a gain factor. The gain is computed using a linear MSE optimization procedure and is updated at each step of the iteration. The convergence of the algorithm, the resolution of some convergence difficulties by using ldquoreblurring,rdquo and methods for the introduction of physical constraints will be discussed. This image restoration scheme can be interpreted as an iterative procedure with a statistical constraint on the image data. Results of several experiments with noisy blurred data are presented to demonstrate the feasibility of this approach.

This work was supported in part by the Joint Services Electronics Program under contract DAAG29-81-K-0024 and in part by the Netherlands Organization for the Advancement of Pure Research (ZWO).</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">J. Biemond</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Restoration of Noisy Blurred Images</style></title><secondary-title><style face="normal" font="default" size="100%">5th Inf. Theory Symposium in the Benelux</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1984</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/05/1984</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Aalten, The Netherlands</style></pub-location><pages><style face="normal" font="default" size="100%">11-20</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">J. Biemond</style></author><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A New Iterative Restoration Scheme for Noisy Blurred Images</style></title><secondary-title><style face="normal" font="default" size="100%">Conf. on Math. Methods in Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1984</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/09/1984</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Aachen, W. Germany</style></pub-location><pages><style face="normal" font="default" size="100%">74-76</style></pages></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aggelos K. Katsaggelos</style></author><author><style face="normal" font="default" size="100%">Ronald W. Schafer</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Iterative Deconvolution Using Several Distorted Versions of an Unknown Signal</style></title><secondary-title><style face="normal" font="default" size="100%">Int. Conf. Acoust., Speech, Signal Processing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1983</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/04/1983</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ivpl.ece.northwestern.edu/system/files/01172115.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Boston, MA</style></pub-location><pages><style face="normal" font="default" size="100%">659-662</style></pages></record></records></xml>