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29 January 2007 Achieving H.264-like compression efficiency with distributed video coding
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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.
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Simone Milani, Jiajun Wang, and Kannan Ramchandran "Achieving H.264-like compression efficiency with distributed video coding", Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65082Z (29 January 2007); https://doi.org/10.1117/12.696471
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