Computer Science and Information Engineering, World Congress on (2009)
Los Angeles, California USA
Mar. 31, 2009 to Apr. 2, 2009
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/CSIE.2009.48
Distributed video coding (DVC) is a new kind of video codec scheme that exploits the statistical characteristics of source at the decoder part. The estimated side information is modeled with the original Wyner-Ziv frame and an additive noise. Side information plays an important role in determining the performance of the codec. In Turbo-or-LDPC-based DVC decoding, the log-likelihood ratio (LLR) for every source bit is calculated using side information and dependent channel model. In this paper, we propose a side information refinement method, which uses previously decoded bit-planes to update the side information for current bit-plane decoding. With the refined side information, more accurate channel model and bit LLRs are achieved, which results in a lower bit rate in video coding Rate-Distortion (RD) performance.
Qionghai Dai, Xiaodong Liu, Rui Wang, "An Improved Side Information Refinement Method in Distributed Video Coding", Computer Science and Information Engineering, World Congress on, vol. 06, no. , pp. 312-315, 2009, doi:10.1109/CSIE.2009.48