Temporal Error Concealment Algorithm for H.264 Based on Variable Size Block Motion Vector Recovery
基于可变尺寸块运动矢量恢复的H.264时域差错掩盖算法

The latest video coding standard H.264 supports variable size block motion prediction and compensation.Adapt to this new feature,a new temporal error concealment algorithm based on variable size block motion vector resilience,is proposed in this paper.Exploiting the correlation of adjacent macroblocks,the encoding mode of lost macroblock,partition pattern of lost macroblock,and the reference frame used in matching can be decided according to neighboring macroblocks' encoding mode and used reference frame information,and then motion vector is recovered for each partitioned subblocks using side distortion matching method.Finally,simulation results show the proposed algorithm is superior to conventional temporal concealment methods for H.264 standard.