基于Contourlet域独立分量分析的视频水印  

Video Watermark Based on Independent Component Analysis in Contourlet Domain

作　　者：吴一全[1] 庞磊[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,江苏南京210016

出　　处：《应用基础与工程科学学报》2009年第6期986-994,共9页Journal of Basic Science and Engineering

摘　　要：提出了一种基于Contourlet域独立分量分析的视频水印.该水印算法首先对视频进行镜头分割;然后对同一镜头中的视频帧分别进行Contourlet分解,并选取分解后的带通分量进行独立分量分析;最后采用邻近特征值平均法将Arnold变换置乱后的水印嵌入到独立分量分析所得的运动分量上.实验结果表明,该算法在保证水印不可见性的同时能够有效地抵抗MPEG压缩及其它常见攻击,并且大大减少了计算量.Video watermark based on independent component analysis（ICA） in Contourlet domain is proposed in this paper.Video shot segmentation is used first.Then frames in the same video shot are decomposed by Contourlet transform and the chosen bandpass subbands of Contourlet transform are analyzed by ICA.Finally,a watermark scrambled by Arnold transform is embedded into the Contourlet coefficients of the motion component according to the mean of the neighboring Contourlet coefficients.Experimental results show that the proposed algorithm can preserve high video quality.The watermark can be extracted blindly and it is robust to MPEG compression and other common video processing.Furthermore,it is simple with much less computation amount.

关 键 词：Contourlet域独立分量分析 视频水印 MPEG压缩 镜头分割 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TN911.7[自动化与计算机技术—计算机科学与技术]