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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
The use of the temporal and spatial correlation of video images to conceal errors is a unique error recovery measure in image communications. For MPEG-2 video communication, this paper analyzes the characteristics of the error concealment measures such as space-based error concealment, time concealment without motion compensation and time concealment with motion compensation, , P, B) and the inter prediction error adaptive error concealment algorithm, it does not need to make any changes to the encoder, and does not need to transfer extra code words, has the versatility in the image communication, meanwhile, the algorithm computation amount Less, easy to implement. Simulation results show that the error concealment effect is significant, especially suitable for scene switching error concealment