30 May 2000 Video codec incorporating block-based multihypothesis motion-compensated prediction
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Proceedings Volume 4067, Visual Communications and Image Processing 2000; (2000) https://doi.org/10.1117/12.386639
Event: Visual Communications and Image Processing 2000, 2000, Perth, Australia
Abstract
Multi-hypothesis prediction extends motion compensation with one prediction signal to the linear superposition of several motion-compensated prediction signals. These motion- compensated prediction signals are referenced by motion vectors and picture reference parameters. This paper proposes a state-of-the-art video codec based on the ITU-T Recommendation H.263 that incorporates multi-hypothesis motion-compensated prediction. In contrast to B-Frames, reference pictures are always previously decoded pictures. It is demonstrated that two hypotheses are efficient for practical video compression algorithms. In addition, it is shown that multi-hypothesis motion-compensated prediction and variable block size prediction can be combined to improve the overall coding gain. The encoder utilizes rate- constrained coder control including rate-constrained multi- hypothesis motion estimation. The advanced 4-hypothesis codec improves coding efficiency up to 1.8 dB when compared to the advanced prediction codec with ten reference frames for the set of investigated test sequences.
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Markus Flierl, Markus Flierl, Thomas Wiegand, Thomas Wiegand, Bernd Girod, Bernd Girod, } "Video codec incorporating block-based multihypothesis motion-compensated prediction", Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); doi: 10.1117/12.386639; https://doi.org/10.1117/12.386639
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