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Wavelet-Based Video Compression Using Long-Term Memory Motion-Compensated Prediction and Context-Based Adaptive Arithmetic Coding

 
: Marpe, D.; Wiegand, T.; Cycon, H.L.

:

Tang, Y.:
Wavelet analysis and its applications. Second international conference, WAA 2001 : Hong Kong, China, December 18 - 20, 2001; Proceedings
London: Springer, 2001 (Lecture Notes in Computer Science 2251)
ISBN: 3-540-43034-2
ISBN: 978-3-540-45333-8 (eBook)
ISBN: 978-3-540-43034-6
S.76-86
International Conference on Wavelet Analysis and Its Applications (WAA) <2, 2001, Hong Kong>
Englisch
Konferenzbeitrag
Fraunhofer HHI ()

Abstract
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.

: http://publica.fraunhofer.de/dokumente/N-245065.html