基于人脸特征的自适应空域差错掩盖算法

针对在视频通信中,高压缩视频码流对通信信道中由于信道带宽、环境等影响出现的丢包和误码极为敏感,本文提出一种在解码端基于人脸检测的自适应空域差错掩盖算法,根据正确接收帧的人脸位置及人脸运动的趋势预测受损帧人脸的位置,对于受损帧人脸内五官区域的宏块采用水平双线性插值,对于背景区域宏块采用自适应多方向插值算法。实验结果表明与现有算法相比主客观质量都有所提高。

Adaptive Spatial Error Concealment Based on Face Features

When compressed video stream is transmitted over internet or wireless network,it is sensitive to packet loss error occurrence due to the limited bandwidth and the instability of the channel .In this paper, an effective adaptive spatial error concealment based on face detection scheme is proposed, we can get the face region in the corrupted frame from the right received frame,then adaptive combine the BI and DI to obtain the recovery value of the missing block.Experimented results show the proposed method is better than the existing techniques in terms of both subjective and objective quality.