论文部分内容阅读
基于ＭＰＥＧ－２标准的错误检测和隐藏是视频领域研究的一个重点，而直流系数的铬误检测与隐藏尚属空白。本文从分析直流系数的错误特点出发，根据图像空域的相关性，首次提出了完整的ＤＣ系数错误检测和恢复算法，并通过实验对算法进行了验证，取得了满意的效果。
Error detection and hiding based on the MPEG-2 standard is a key point in the field of video research. However, the chrome error detection and hiding of the DC coefficients is still not clear. In this paper, based on the analysis of the error characteristics of DC coefficients, a complete DC coefficient error detection and recovery algorithm is proposed for the first time based on the correlation of image spatial regions. The algorithm is verified through experiments and satisfactory results are obtained.