为解决视频压缩数据在网络传输中的误码或丢包问题,提出了一种适用于数字视频编码标准H0264的时域错误隐藏算法。该算法结合H.264中多尺寸编码块模式的特点,通过对受损块邻域块的模式分析来判定受损块模式,并针对各子块的运动类型分别建立相应的运动矢量候选集,从而选择最优运动矢量重建受损块。实验结果表明,该算法有效增强了对复杂运动区域重建的适应性,在不同的网络丢包率环境下均可实现较好的
The paper presents a tempral error concealment algorithm suitable for the H. 264 video coding standard for error code and packet loss issues of video compression data in network transmission. The algorithm determines the correct mode for the lost block based on the modes of neighboring macroblocks, and according to the motion of the block, selects the most appropriate motion vector to recover the damaged area among a set of candidate motion vectors. The experimental results show that the complicated motion region can be well recovered with the proposed algorithm and good results can be achieved for video under various conditions of packet loss rate.