基于子块运动估计补偿的视频误码块掩饰

Error Concealment Based on Sub-Block Motion Estimation and Compensation

视频数据在传输过程中存在着信道误码或丢包等现象,为了达到提高视频误码掩饰的目的,可利用子块运动估计方法,预测出在时间方向上的相关信息,通过运动补偿进行误码掩饰,同时为了消除子块补偿的边缘效应,进一步利用重叠块运动补偿方法以提高掩饰效果。

When compressed video is transmitted over practical communication channels, there are bits error or packets lossy. In order to improve the image quality of decoding, error concealment in the decoding side ＇is necessary. In this paper, the temporal correlation is obtained by the motion estimation on the corneous regions that nearest the damaged sub-blocks. And then, the overlapped motion compensation is employed to further improve the error concealment. The scheme is also used to conceal the error of the inter frame.