结合信息嵌入技术的空时域I帧误码掩盖算法  

Error Concealment Scheme of Temporal and Spatial Combined I Frame Based on Data Embedding

作　　者：徐银辉[1] 董育宁[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《电视技术》2008年第4期19-22,共4页Video Engineering

基　　金：江苏省计算机信息处理技术重点实验室开放课题(苏州大学KJS0712)

摘　　要：算法基于H.264的灵活宏块次序(FMO),在编码端,每个宏块提取中部的4个像素值,嵌入到下个帧的对应遮蔽片中;在解码端,提取出重要数据,根据场景是否切换在空域和时域的方法之间选择,在空域方法中又根据纹理复杂程度对两种插值算法进行自适应以达到提高I帧主客观质量的目的。实验证明了新算法的有效性。The proposed scheme is based on Flexible Macro-block Ordering（FMO） of H.264. At encoding end, four pixels of each micro-block are extracted and embedded into corresponding hiding slice in next frame. In decoding end, the methods in temporal and spatial are selected according to whether the scene switches. Finally, the above two schemes are adapted in spatial domain based on complicate degree of veins, in order to improve the objective and subjective quality of I frame. The experimental results prove the efficiency of the new scheme.

关 键 词：空域误码掩盖 时域误码掩盖 H.264/AVC标准 信息嵌入 

分 类 号：TN919.81[电子电信—通信与信息系统]