%0 Journal Article
%T A Channel Distortion Estimation Model Based on MPEG-4 Coding Bit Stream<br>一种基于MPEG-4视频编码流的信道失真模型
%A TANG Zhen-hu
%A LIU Wen-yu
%A ZHAO Shuang
%A TANG Zhen-hu
%A LIU Wen-yu
%A ZHAO Shuang
%A TANG Zhen-hu
%A LIU Wen-yu
%A ZHAO Shuang
%A <br>唐振华
%A 刘文予
%A 赵爽
%J 中国图象图形学报
%D 2009
%I 
%X Accurately estimating the channel distortion for the video communication is significant to the joint power and rate-distortion (P-R-D)optimization. This paper proposes a channel distortion estimation model based on MPEG-4 coding stream. The model recursively estimates the channel distortion of the video coding sequences according to the bit error rate of the channel and the video coding information obtained in the video encoder. Simulation results demonstrate that the average relative estimation error and the average absolute estimation error introduced by the model are small. The model is applicable for the relative optimizations based on P-R-D.
%K MPEG-4<br>视频通信
%K 率失真
%K 信道失真模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=3C625CBFDDEF9B8832ED05E2405CD3A4&yid=DE12191FBD62783C&vid=F3583C8E78166B9E&iid=94C357A881DFC066&sid=A766A50385B9FB1F&eid=899CC9158FC43EF4&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=7