分层多描述视频编码及其在差错网络环境下的仿真研究  

Joint layered and multiple description video coding and its performance over error-prone network

作　　者：张朝鹏[1] 倪江群[1] 王春桃[1] 

机构地区：[1]中山大学电子与通信工程系,广东广州510275

出　　处：《通信学报》2005年第7期129-135,共7页Journal on Communications

摘　　要：提出了一种适用于差错网络视频传输的联合编码结构。首先从理论上分析了这种编码结构的特点、应用环境及其优势,然后以两种不同的具体实现方法和不同的分层比例实现了这一编码结构。通过对该编码结构在差错网络环境中的数值仿真,给出了具体的性能评估和分析,证明了这一编码结构的有效性,且其有效性不依赖于具体实现手法和分层比例。A joint layered and multiple description coding structure for video over error-prone network was presented,which has combined the traits of both layered and multiple description coding. Firstly the characteristic, implementation environment and the transmission advantage of the proposed coding structure were analyzed theoretically. Then in two different ways and with two different layering ratio the coding structure was brought into reality. Finally the performance of the coding structure was evaluated from the result of transmission simulation over error-prone network, from which the merit of this coding structure is proved to be determined by itself, not by any specific implementation methods or the layering ratio.

关 键 词：视频编码 多描述编码 分层编码 差错网络 小波 

分 类 号：TN911.73[电子电信—通信与信息系统]