Successive refinement based Wyner-Ziv video compression
Image Communication
Journal of Visual Communication and Image Representation
Prediction of transmission distortion for wireless video communication: Algorithm and application
Journal of Visual Communication and Image Representation
Journal of Visual Communication and Image Representation
Multiple description coding for SNR scalable video transmission over unreliable networks
Multimedia Tools and Applications
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Performance bounds for generalized hybrid coding of video sequences with motion-compensating prediction are derived based on rate-distortion theory. It is shown that the spatial power spectrum of the motion-compensated prediction error can be calculated from the signal power spectrum and the displacement estimation error p.d.f.. A spatial Wiener filter can improve the efficiency of motion-compensating prediction. Memoryless encoding of the motion-compensated prediction error and intraframe encoding of the motion-compensated prediction error are compared. An evaluation of the rate-distortion functions for a typical videoconference sampling format shows that for integer pel accuracy of the displacement estimate the additional gain by motion-compensating prediction over pure intraframe coding is limited to ∼ 0.8 bits/sample in moving areas. Required accuracies of the displacement estimate for a gain of motion-compensating interframe coding over intraframe coding are given.