关键词: H.264, 误码隐藏, 视频通信, 直方图, 边界匹配

Abstract: In this paper, we discuss several error concealment techniques for H.264 coded picture. A new method is proposed. Different techniques are used for Intra and Inter frames according to the smoothness and the motion characters of the region. The smoothness of the blocks is calculated by the histogram of the blocks. For Inter frame, the MV and the modes of adjacent macroblocks in the missing frame and multi-reference frames are used to determine the method of temporal error concealment. For Intra frame, we adaptively select the spatial error concealment modes between bilinear interpolation and directional interpolation. Experimental results show that our method has better recovery result than conventional approach, which can improve the video quality obviously.

Key words: H.264, error concealment, video communication, Histogram, Boundary matching