摘要
文章提出了一种新的误差掩盖(ErrorConcealment)算法,作为在解码器端的后处理工具去解决视频序列在传输过程中产生的块及其运动矢量同时丢失的问题。笔者利用LOG算子去对丢失块周围的块进行纹理检测,取所有属于纹理块的运动矢量的平均值,作为丢失运动矢量的估计。仿真结果表明对不同块丢失率或不同视频序列,此算法都能比传统的方法恢复出质量更高的图像。
A new error concealment algorithm is proposed as a post-processing tool at the decoder side for recovering the lost blocks and their motion vectors as well incurred during the video transmission.In this proposed scheme,LOG operator is used to detect the texture of the blocks around the lost block.Then it takes the average value of all the motion vectors of texture-block to estimate the lost motion vectors.Simulation results show that the proposed method can recover the higher quality image in different rates of lost block or different video sequences,comparing to the existing traditional concealment algorithms.
出处
《计算机工程与应用》
CSCD
北大核心
2005年第5期30-32,217,共4页
Computer Engineering and Applications
基金
国家自然科学基金(编号:60274006)
国家杰出青年科学基金(编号:60325310)
教育部跨世纪优秀人才基金
广东省重点自然科学基金(编号:020826)
