一种改进的三边缘统计错误隐藏算法  

Improved three-edge statistical error concealment algorithm

作　　者：王欢[1] 余翔[1] 

机构地区：[1]重庆邮电大学无线定位与空间测量研究所,重庆400065

出　　处：《数字通信》2014年第1期7-10,共4页Digital Communications and Networks

基　　金：国家科技重大专项"新一代宽带无线移动通信网"(2012ZX03006002003)

摘　　要：在空域错误隐藏算法中,丢失块边缘方向估计的精确度和算法复杂度问题一直都是研究的重点。提出了一种改进的三边缘统计错误隐藏算法,该算法根据正确接收的丢失块周围3圈像素点的统计信息,自适应地选择不同的隐藏算法,从而有效改善了以上问题并对视频图像的主观视觉效果和峰值信噪比有一定程度的提高。The paper analyzes the accuracy of the estimated lost block edge direction and the complexity of the algorithm in spatial error conceahnent method. This paper puts forward an improved method through statistics of the edge points and di- rection according to the message of correctly received points around the three-edge of lost blocks and then adaptively select the corresponding algorithm. The proposed algorithm can efficiently improve the above problem and also obtain good subjec- tive quality and higher Peak Signal-to-Noise Ratio （PSNR）.

关 键 词：错误隐藏 边缘检测 区域插值 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]