Video codec incorporating block-based multihypothesis motion-compensated prediction

Markus Flierl; Thomas Wiegand; Bernd Girod

doi:10.1117/12.386639

30 May 2000 Video codec incorporating block-based multihypothesis motion-compensated prediction

Markus Flierl, Thomas Wiegand, Bernd Girod

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.

Citation Download Citation

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); https://doi.org/10.1117/12.386639

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