【作者】 张义忠； 张琦； 李朝晖；

【Author】 Zhang Yizhong,Zhang Qi,Li Zhaohui (School of Information Engineering,Communication University of China,Beijing 100024)

【机构】 中国传媒大学信息工程学院；

【摘要】 为了进一步减小视频传输中丢包对重建图像质量的影响,本文借鉴了最新的自适应变块错误隐藏算法,同时对标准中的边界匹配算法做了改进,提出了一种基于外边界匹配的时域变块错误隐藏算法。新算法中变块错误隐藏充分考虑了宏块内部像素运动的不一致性,而外边界匹配则充分考虑了分块效应以及图像时域、空域的连续性。实验结果表明,新算法掩盖后的图像在主客观质量上都较H.264/ AVC标准有显著改善。更多还原

【Abstract】 In order to reduce the influence of packet loss on picture quality, temporal variable blocksize error concealment based on outside pixel match was proposed, which is based on the newest adaptive variable blocksize error concealment and the boundary matching algorithm is improved.The different motion of the corrupted macroblock is fully considered in the variable blocksize error concealment in the new method,while variable blocksize and the spatial and temporal continuation of the picture is fully considered in the outside pixel matching algorithm.Simulation results show the proposed method yields better picture quality than H.264/ AVC standard.更多还原