%0 Journal Article
%T Rate adaptive distributed video coding based on LDPC<br>基于LDPC的码率自适应分布式视频编码
%A Yang Chun Ling
%A Xia Hongtao
%A ZHANG Xingshao
%A <br>杨春玲
%A 夏洪涛
%A 张兴绍
%J 中国图象图形学报
%D 2010
%I 
%X In order to achieve better rate distortion (RD) performance in distributed video coding (DVC), a new rateadaptive low density parity check (RALDPC) coding algorithm is proposed. Firstly, a high compression ratio code is constructed based on progressive edge-growth (PEG) algorithm. Then low compression ratio codes are obtained using row splitting algorithm. The rate can be well adjusted by merging and splitting the parity-check matrix rows. And three restriction conditions for merging check nodes are proposed in order to obtain good performance codes. Based on the RALDPC, a rate adaptive DVC algorithm is proposed, which can achieve better RD performance about 0.1~0.7dB compared to DVC algorithm based on the popular Turbo codes, when the correlation between the original and side information is medium or high.
%K 分布式视频编码
%K 低密度奇偶校验(LDPC)码
%K 码率自适应
%K PEG算法
%K 校验式
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=71B49AB944AAC4A8201F4E7755BB7290&yid=140ECF96957D60B2&vid=23CCDDCD68FFCC2F&iid=59906B3B2830C2C5&sid=F69F61A42EF5D746&eid=6B11F480D189254A&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=0