An Improved Method for Side Information Generation and Correlation Parameter Estimation for Distributed Video Coding

被引：0
|
作者：
Li, Bin [1 ]
Wang, Yumei [1 ]
Liu, Yu [1 ]
Zhang, Lin [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Minist Educ, Key Lab Universal Wireless Commun, Beijing 100088, Peoples R China
来源：
2011 IEEE GLOBECOM WORKSHOPS (GC WKSHPS) | 2011年
关键词：
side information; correlation parameter estimation; distributed video coding;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In distributed video coding (DVC), side information (SI) is crucial to the decoding performance and reconstruction quality of the image. Therefore, we propose to make use of the temporal correlation between the partially reconstructed WZ frame and the decoded key frames as well as the spatial correlation in the WZ frame to revise the SI for better quality. Furthermore, the parameter of the correlation noise model between the modified SI and the partially reconstructed WZ frame is estimated as the approximation of that for the other parts which have not been decoded in the WZ frame. The experimental results illustrate that compared with the method in DISCOVER, the PSNR gain for our proposed SI generation and correlation parameter estimation method can achieve up to 1.4db.
引用
收藏
页码：40 / 44
页数：5
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