基于人类视觉系统的自适应数字水印算法  

Adaptive Watermarking Algorithm Based on Human Visual System

作　　者：刘宏伟[1] 谢维信[2] 喻建平[2] 闫晓涛[1] 

机构地区：[1]西安电子科技大学电子工程学院,西安710071 [2]深圳大学信息工程学院,深圳518060

出　　处：《上海交通大学学报》2008年第7期1144-1148,共5页Journal of Shanghai Jiaotong University

基　　金：国家高技术研究发展计划(863)项目(2003AA142060);深圳市科技计划资助项目(200513)

摘　　要：基于人类视觉系统,在水印嵌入过程中结合载体图像的纹理特征和亮度特征,自适应地选择水印嵌入强度,提出了一种隐藏数字水印的新方法.将一幅二值图像作为水印嵌入到载体图像之中,实现水印的不可感知性和鲁棒性.实验结果表明,该方法可以很好地提高嵌入水印的不可见性,并对常见的数字图像处理操作具有较强的鲁棒性,同时能保证含水印图像的质量.Based on the features of human visual system, an algorithm was studied which can adaptively choose the watermark＇s strength of embedding with the image＇s characteristics of texture and luminance during embedding, and a new method which can process the watermark as a binary image and embed it into the carrier image was proposed. And in the method, the robustness and imperceptibility of the watermark were implemented. The experimental results show that the proposed technique can improve the impercepti- bility of embedded watermark and is robust to common digital image processing operations. At the same time, the quality of the watermarked image is guaranteed.

关 键 词：人类视觉系统 自适应水印 离散余弦变换 阿诺德变换 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]