奇异值分解算法在数字水印技术中的应用  

The application of the singular value decomposition algorithm in the digital watermarking technology

作　　者：雷超阳[1] 钟一青[2] 

机构地区：[1]长沙通信职业技术学院计算机工程系,湖南长沙410015 [2]湖南环境生物职业技术学院计算机工程系,湖南衡阳421005

出　　处：《长沙交通学院学报》2008年第4期78-82,共5页Journal of Changsha Communications University

基　　金：湖南省教育科学"十一五"规划课题(XJK06CZC078)

摘　　要：奇异值分解算法应用于数字水印技术中,把水印信息按位置换,对宿主图像分块并做奇异值分解,在奇异值域做数学变换以重复嵌入按位置换的二值水印信息.实验结果表明,该方法既提高了水印的信息量,同时又使得水印图像具有很强的稳健性,能抵抗旋转和裁剪等多种攻击,水印的保密性与鲁棒性均有显著的提高.The application of the singular value decomposition algorithm in the digital watermarking technology is proposed. The watermarking information with the bit transposition algorithm is encrypted, singular value decomposition to the original image is carryed out, and multiple redundant watermarking information in strange value territory makes the mathematical manipulation is embeded. The experiment results show that the method both enhance the watermark information content, and enable the watermark images to have very strong steadiness. It can withstand many kinds of attacks of rotating, cropping and so on. Watermarking confidentiality and robustness has been remarkably enhanced.

关 键 词：数字水印 奇异值分解 水印嵌入 水印提取 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]