整帧丢失时基于多帧参考的差错掩盖算法

压缩视频对于信道误码十分敏感，可导致重组视频的质量严重下降。在低码率的情况下，当网络传输中出现数据包丢失的情况时，通常对应于一整帧图像内容的丢失。为此本文提出了两种针对整帧图像丢失的差错掩盖算法一基于多帧参考的差错掩盖算法。研究结果表明，该算法不仅能够恢复整个丢失帧，而且其掩盖效果比传统的掩盖算法更好。

Error Concealment Algorithm Based on Multiple-Reference for Entire Frame Loss

Compressed video is sensitive to channel errors,which may degrade the reconstructed pictures severely.In low bit rate applications,the loss of a packet directly results in the loss of the whole frame.In order to reconstruct the loss frames,we proposed two kinds of error concealment algorithms that is error concealment algorithms based on multiple-reference.The results show that our algorithms obviously outperform the existing methods on both the PSNR and visual quality.