多参考运动补偿预测中的误码传播和编码效率  

Propagation Distortion and Coding Efficiency in Multi-hypothesis Motion Compensated Prediction

作　　者：郁杨[1] 朱雪龙[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《电子学报》2001年第z1期1863-1867,共5页Acta Electronica Sinica

摘　　要：视频信号在基于运动补偿预测的混合编码后 ,在不可靠信道中传输时会遇到严重的误码传播问题 .本文从理论上分析了一种广义的运动补偿预测技术———多参考运动补偿预测的误码传播和编码效率 ,得到了由误码传播引起的失真和编码效率的理论极限 ,并给出了某些假设条件下理论极限的值 .通过理论分析和对几种特定的基于多参考运动补偿预测的混合编码方案在INTERNET丢包环境中的仿真 。When hybrid coded video with motion compensated prediction (MCP) is transmitted over unreliable channels there exists the annoying problem of error propagation.In this paper we analyze the performance of coding efficiency and the distortion caused by propagation error,i.e.,propagation distortion,in multi hypothesis MCP,and give its theoretical performance limit.Then the numerical results under some assumptions are given.Both the theoretical performance and the simulation results of some specific multi hypothesis MCP schemes under the typical packet loss environment of Internet show that with multi hypothesis MCP both the propagation distortion can be attenuated and the coding efficiency can be improved.

关 键 词：多参考运动补偿预测 误码传播 编码效率 

分 类 号：TN919.81[电子电信—通信与信息系统]