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Proceedings Paper

Achieving H.264-like compression efficiency with distributed video coding
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Paper Abstract

Recently, a new class of distributed source coding (DSC) based video coders has been proposed to enable low-complexity encoding. However, to date, these low-complexity DSC-based video encoders have been unable to compress as efficiently as motion-compensated predictive coding based video codecs, such as H.264/AVC, due to insufficiently accurate modeling of video data. In this work, we examine achieving H.264-like high compression efficiency with a DSC-based approach without the encoding complexity constraint. The success of H.264/AVC highlights the importance of accurately modeling the highly non-stationary video data through fine-granularity motion estimation. This motivates us to deviate from the popular approach of approaching the Wyner-Ziv bound with sophisticated capacity-achieving channel codes that require long block lengths and high decoding complexity, and instead focus on accurately modeling video data. Such a DSC-based, compression-centric encoder is an important first step towards building a robust DSC-based video coding framework.

Paper Details

Date Published: 29 January 2007
PDF: 12 pages
Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65082Z (29 January 2007); doi: 10.1117/12.696471
Show Author Affiliations
Simone Milani, Univ. of Padova (Italy)
Jiajun Wang, Univ. of California, Berkeley (United States)
Kannan Ramchandran, Univ. of California, Berkeley (United States)

Published in SPIE Proceedings Vol. 6508:
Visual Communications and Image Processing 2007
Chang Wen Chen; Dan Schonfeld; Jiebo Luo, Editor(s)

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