Title :
Bidirectional MC-EZBC with lifting implementation
Author :
Chen, Peisong ; Woods, John W.
Author_Institution :
Qualcomm Inc., San Diego, CA, USA
Abstract :
In conventional motion-compensated three-dimensional subband/wavelet coding, where the motion compensation is unidirectional, incorrect classification of connected and unconnected pixels caused by incorrect motion vectors (MVs) has resulted in some coding inefficiency and visual artifacts in the embedded low-frame-rate video. In this paper, we introduce bidirectional motion compensated temporal filtering with unconnected pixel detection and I blocks. We also incorporate a recently suggested lifting implementation of the subband/wavelet filter for improved MV accuracy in an MC-EZBC coder. Simulation results compare PSNR performance of this new version of MC-EZBC versus H.26L under the constraint of equal groups of pictures size, and show a general parity with this state-of-the-art nonscalable coder on several test clips.
Keywords :
filtering theory; image classification; motion compensation; video coding; wavelet transforms; PSNR performance; bidirectional MC-EZBC; bidirectional motion compensated temporal filtering; embedded low-frame-rate video; lifting implementation; motion vectors; motion-compensated three-dimensional subband coding; pixel detection; state-of-the-art nonscalable coder; wavelet coding; wavelet filter; Filtering; Filters; Image reconstruction; Interpolation; Motion compensation; Motion detection; Motion estimation; Spatial resolution; Testing; Video coding; Bidirectional motion estimation; MCTF; lifting; motion compensated temporal filtering; scalable video coding; subband/wavelet; subpixel accuracy;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
DOI :
10.1109/TCSVT.2004.833165