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Improved Error Concealment Algorithm for H.264 Wireless Networks
Author(s): 
Pages: 9-11,34
Year: Issue:  13
Journal: Video Engineering

Keyword:  错误隐藏边界匹配算法运动矢量宏块模式;
Abstract: 视频压缩码流在无线网络传输过程中受无线网络环境的影响丢包现象严重,重构图像质量下降.在H.264时域误码掩盖算法的基础上,根据时域和空域相邻宏块的运动矢量对丢失宏块的分割模式进行自适应选择,采用改进的边界匹配误差函数,估计丢失宏块的运动矢量.在无线网络环境下对多种视频序列和宏块丢失率进行仿真,图像质量有一定的提高.在宏块丢失率为10%情况下,峰值信噪比相对H.264标准算法提高0.08~1.13 ...
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