Arithmetic coding for data compression
Communications of the ACM
IEEE Transactions on Circuits and Systems for Video Technology
Long-term memory motion-compensated prediction
IEEE Transactions on Circuits and Systems for Video Technology
Very low bit-rate video coding using wavelet-based techniques
IEEE Transactions on Circuits and Systems for Video Technology
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In this paper, we present a novel design of a wavelet-based video coding algorithm within a conventional hybrid framework of temporal motion-compensated prediction and transform coding. Our proposed algorithm involves the incorporation of multi-frame motion compensation as an effective means of improving the quality of the temporal prediction. In addition, we follow the rate-distortion optimizing strategy of using a Lagrangian cost function to discriminate between different decisions in the video encoding process. Finally, we demonstrate that context-based adaptive arithmetic coding is a key element for fast adaptation and high coding efficiency. The combination of overlapped block motion compensation and frame-based transform coding enables blocking-artifact free and hence subjectively more pleasing video. In comparison with a highly optimized MPEG-4 (Version 2) coder, our proposed scheme provides significant performance gains in objective quality of 2.0- 3.5 dB PSNR.