关键词: H.264视频标准, 错误隐藏, 平面拟合, 运动矢量

Abstract: In a wireless transmission, the compressed video stream can result in lower quality of image reconstruction with the motion vector mismatch. A motion vector recovery for video error concealment based on the plane fitting algorithm is proposed. According to the characteristics of the correlation between the adjacent macro blocks and the multi reference frame of the H.264 video standard, the motion vector of each divided block surrounding the lost macro-block is projected to one point for one plane presenting the MV changing tendency in small regions. This algorithm reconstructs the motion vector of the damaged macro-block by the fitting plane algorithm based on the improved boundary matching algorithm, and then the optimal motion vector is selected to reconstruct the damaged images. This algorithm not only avoids the block effects that caused by the original algorithm, but also in different probability of RTP packet losing, the peak signal to noise ratio of the algorithm has improved 0.3~2.5 dB compared to the adaptive intra-frame error concealment algorithm.

Key words: H.264 video standard, error concealment, plane fitting, motion vector