摘要
提出了一种基于边缘检测的空域误码掩盖算法,算法通过检测受损宏块相邻块的边缘信息,将受损块分为平坦块、边缘块和纹理块三类,根据受损宏块的类型,选择不同的方法恢复。对于边缘块,采用改进的方向内插恢复;对于纹理块,在不同的方向进行加权内插,并按照一定的规则将多个方向的亮度值加权组合。仿真实验表明,算法具有良好的误码掩盖效果。
In this paper,we propose an effective spatial error concealment method based on edge detection.By using edge information extracted from the surrounding blocks,the error block is classified into three categories：uniform blocks,edge block and texture block..And then the error block is reconstructed by appropriate methods.For edge block a new directional interpolation is used,and for texture block the damaged block is weighted interpolated on each detected directions,using related pixels in neighboring blocks then the results in each direction are the weighted linear interpolated. Simulation results show that the proposed method yields better video quality than conventional approaches.
出处
《微计算机信息》
2010年第1期170-171,164,共3页
Control & Automation
关键词
误码掩盖
边缘检测
方向内插
error concealment
edge detection
directional interpolation
