不可见性和鲁棒性均衡的彩色数字水印算法  

A Color Image Watermarking Algorithm Based on LWT and SVD

作　　者：王佳欣[1] 文政颖[1] 

机构地区：[1]河南工程学院计算机学院,河南郑州451191

出　　处：《计算机仿真》2014年第3期266-269,共4页Computer Simulation

基　　金：国家自然科学基金项目(61301232);河南省教育厅科学技术研究重点项目(14A520066)

摘　　要：为提高彩色数字图像水印搞攻击性,提出了一种不可见性和鲁棒性均衡的彩色数字水印算法。首先从彩色载体图像中提取绿色分量,并采用提升小波对其进行二级分解,然后计算图像低频分量的Radon变换不变量构造水印系统;最后采用奇异值算法对图像的频分量进行分解,将混沌置乱后水印图像嵌入到奇异值中,得到含有水印的彩色载体图像。仿真结果表明,该算法不仅有良好的不可见性,而且对各种攻击均具有很好的鲁棒性。In order to improve invisibility and robustness of the digital image watermarking, this paper proposed a color image watermarking algorithm based one lifting wavelet transform and singular value decomposition. Firstly, green component of the color image was extracted and decomposed by lifting wavelet transform, and then the Radon moment invariant was computed to form a watermarking system. Lastly, the transformation of the intermediate fre- quency component was decomposed by singular value decomposition and chaos after scrambling watermark image was embed into the singular value to get the colore watermarking images. The simulation results show that this proposed algorithm has not only the good invisibility, but also very good robustness to all kinds of attacks.

关 键 词：奇异值分解 提升小波变换 彩色数字图像 水印算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]