MPEG-2视频通信中一种自适应错误隐藏算法

被引:8
作者
冯亚林
余松煜
庄健敏
机构
[1] 上海交通大学图像通信与信息处理研究所
关键词
视频通信;图像编码;自适应错误隐藏;MPEG-2;
D O I
10.16183/j.cnki.jsjtu.1999.04.007
中图分类号
TN911.72,TN919.8 [];
学科分类号
摘要
利用视频图像在时间上和空间上的相关性对错误进行隐藏是图像通信中特有的错误恢复措施.针对MPEG-2视频通信,分析了基于空间的错误隐藏、无运动补偿的时间隐藏和有运动补偿的时间隐藏等各种错误隐藏措施的特点及其适应范围,提出了基于图像编码帧类型(I,P,B)和帧间预测误差的自适应错误隐藏算法,它不需要对编码器作任何改动,也不需要传送额外的码字,在图像通信中具有通用性.同时,该算法计算量少,实现简单.仿真结果表明,其错误隐藏效果显著,特别适合场景切换时的错误隐藏
引用
收藏
页码:28 / 30+37
页数:4
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