基于多方向自适应加权的空间错误隐藏算法  

Spatial Error Concealment Algorithm Based on Adaptive Multi-directional Weight

作　　者：李玉峰[1] 刘飞[1] 王宇鹏[1] 

机构地区：[1]沈阳航空航天大学电子信息工程学院,辽宁沈阳110136

出　　处：《电视技术》2015年第7期38-42,共5页Video Engineering

基　　金：辽宁省自然科学基金项目(2013024008)

摘　　要：为了提高H.264/AVC压缩视频码流在无线信道传输过程中的抗误码性能,提出了一种基于多方向自适应加权的空间错误隐藏算法。该算法首先应用边缘算子检测受损宏块的相邻宏块信息,然后通过多方向自适应加权插值得到受损宏块像素近似值。实验表明,该算法相对传统空间错误隐藏算法,对于不同视频序列图像重构质量有很大的改善,具有较高的应用价值。In order to improve the H. 264/AVC compressed video stream error resilience in wireless channel transmission, spatial error concealment algorithm based on adaptive muhi-direetional weigh is proposed in this paper. Firstly, the algorithm detects the adjacent information of blocks around the damage block by using the edge operator. Finally, the approximation of the pixel in the damaged macro block is gotten by using multi-direction adaptive weighted interpolation. Experiments show that, image reconstnlc- tion quality is greatly improved by using this algorithm,which has higher application value for different video sequence comparing with the traditional spatial error concealment algorithms.

关 键 词：H.264/AVC 抗误码性 空间错误隐藏 自适应加权 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]