摘要：

针对3G无线网络传输过程中引入的符合码流语义的内容误码，提出一种基于压缩域与像素域空间相关性的H.264误码检测算法。该算法利用压缩域DC系数空间相关性和像素域重建像素空间相关性来检测宏块是否存在误码。实验结果表明，在不同误码率和不同序列的情况下，采用该算法的解码器可有效检测误码，提高重建图像的质量。

关键词: 压缩域, 像素域, 空间相关性, H.264视频标准, 误码检测

Abstract:

In order to detect the content errors which conform to syntax standard while video contents have changed through 3G wireless networks, an error detection algorithm based on compressed domain and pixel domain spatial correlation for H.264 is proposed. The algorithm uses the similarity of neighboring Direct Current(DC) coefficients in compressed domain and neighboring reconstruct pixels in pixel domain to detect whether there is an error in one macroblock. Experimental result shows that, under different error rate and different streams, the proposed algorithm can detect content errors effectively and improve the reconstruct image quality significantly.

Key words: compressed domain, pixel domain, spatial correlation, H.264 video standard, code error detection

中图分类号: 

• TP37