基于图像置乱变换的数字水印算法研究  

Study on algorithm of digital watermark based on image scrambling variety

作　　者：陈萍[1] 史金昌[1] 

机构地区：[1]黄淮学院计算机科学系,河南驻马店463000

出　　处：《高师理科学刊》2007年第6期25-28,共4页Journal of Science of Teachers＇College and University

基　　金：河南省科技攻关项目(0624220044)

摘　　要：结合Arnold变换,提出了一种基于图像置乱变换和小波变换的数字水印算法.首先对被隐藏图像进行Arnold置乱,把主图像划分为n×n区域,对每个区域进行3次离散小波变换,再利用算法把待隐藏信息嵌入各个区域的中频子带和高频子带,实施多处信息隐藏以提高其鲁棒性.对提出的算法进行了仿真实验,并对嵌入信息的图像进行各种攻击测试.实验表明,该算法对嵌入信息具有不可见性和良好的鲁棒性.Combined with Arnold transformation, algorithm of information hiding based on picture division information hiding algorithm was proposed. First a and wavelet domain, and then wavelet transformation hidden picture is Arnold transformed, the main picture is divided into n×n regions in which discrete wavelet transformation is used for three times. Then the hiding information is embedded into the middle frequency sub-band and the high frequency sub-band in every region by using algorithm, using information hiding in places can increase the robustness. According to the algorithm the simulation experiment is carried out, and the picture embedded information undergoes various attacking testing. The experiment shows that the embedded information has invisibility and fair robustness.

关 键 词：数字水印 图像置乱 AMOLD变换 小波变换 信息隐藏 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]