基于纹理方向预测的空域差错隐藏方案

A Spatial Error Concealment Scheme Based on Prediction of Texture Direction

视频压缩码流在差错信道中传输时容易发生损坏或丢失,I帧出错时的影响尤为严重.针对这一问题,在对I帧造成的差错蔓延进行分析的基础上,对一种空域差错隐藏算法———纹理方向法进行了改进,优化其纹理划分并进行了仿真分析,结果表明,这种方法达到了较好的隐藏效果,改善了图像的主观质量.

The compressed video data is easily disturbed or lost while transmitting in error prone channel, especially when it occurs in Intra frames. To solve this problem, a spatial error concealment algorithm, texture prediction interpolation, is improved based on the analysis of the error propagating caused by Intra frames. It has been demonstrated that this method achieves good concealment effects and improves perceptual quality of images.