A global rate-distortion optimized approach for H.26L low bit rate robust video over the Internet  

作　　者：杨华 YuSongyu YangSongan 

机构地区：[1]InstituteofImageCommunications＆InformationProcessing,ShanghaiJiaotongUniversity,Shanghai200030,P.R.China

出　　处：《High Technology Letters》2005年第2期113-117,共5页高技术通讯（英文版）

基　　金：国家高技术研究发展计划(863计划)

摘　　要：In recent years, more and more applications of video communication over the Internet have been extended, so the demand for reliable transmission of compressed video in a packet loss environment is ever increasing. Rate-Distortion optimized mode selection is a fundamental problem of video communication over packet-switched networks, but the classical R-D method only considers quantization distortion in the source and hence it cannot achieve global optimality. Here we introduce a new global R-D optimal Macro-Block coding mode decision scheme for the new H.26L video compression standard. Based on the Internet packet loss model of Bernoulli and Gilbert, this R-D mode decision approach can result in better error robustness than classical method. Furthermore, our experimental results also demonstrate its superior adaptive error resilience and feasibility.

关 键 词：Bernoulli信道模型 Gilbert信道模型 因特网 失真率 视频压缩 

分 类 号：TN915[电子电信—通信与信息系统]