基于方向选择的H.264时域自适应错误隐藏算法  

Adaptive Temporal-domain Error Concealment Algorithm Based on Direction Selection for H.264

作　　者：陶小娟[1] 王玲[1] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《世界科技研究与发展》2013年第2期173-176,共4页World Sci-Tech R&D

基　　金：湖南省自然科学基金(10JJ6102)资助

摘　　要：介绍了一种多模式自适应叠加的H.264时域错误隐藏算法。针对分割模式,选出两种最优模式加权叠加。同时为了提高隐藏精度,提出一种带方向选择的边界匹配算法,考虑了边界上三个方向的像素匹配。实验结果表明,在相同的丢包率下,该算法与之前的隐藏算法相比,对PSNR值的提高和视频主观质量的改善效果明显。A adaptive H. 264 temporal-domain error concealment algorithm of multi-mode is proposed. Aiming at split mode, two optimal mode are selected for weighted superposition. In order to improve the accuracy, a directional boundary matching algorithm is proposed, considering pixels matching in three directions on the boundary. Experimental results show that in the same packet loss rate ,the proposed algorithm has better performance in the improvement of PSNR and visual effect, compared with previous concealment algorithms.

关 键 词：H 264 错误隐藏 时域 方向选择 自适应 

分 类 号：TN919.81[电子电信—通信与信息系统]