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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)
Event: Visual Communications and Image Processing 2000, 2000, Perth, Australia
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.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Markus Flierl, Thomas Wiegand, and Bernd Girod "Video codec incorporating block-based multihypothesis motion-compensated prediction", Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000);


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