一种基于Contourlet变换的自嵌入图像水印算法  

A Self-Embedding Image Watermarking Algorithm Based on Contourlet Transform

作　　者：张贵仓[1] 杨军彦[1] 秦娜[1] 李智[1] 

机构地区：[1]西北师范大学数学与信息科学学院,甘肃兰州730070

出　　处：《江西师范大学学报（自然科学版）》2012年第1期99-101,110,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：甘肃省自然科学基金(0803RJZA109);甘肃省科技攻关课题(2GS035-A052-011)资助项目

摘　　要：在对Contourlet变换分析的基础上,提出了一种基于Contourlet变换的自嵌入图像水印算法.该算法利用奇异值分解方法提取图像的特征信息生成水印,并将其通过量化的方法嵌入到图像的Contourlet域.实验结果表明:该算法具有较好的不可见性,可区分非恶意操作和恶意操作,并能对图像的篡改区域定位.First of all, briefly analyzed contourlet transform, and then proposed a self-embedding image water- marking algorithm based on contourlet. In the algorithm, the watermarking was extracted from image feature gen- erated from the image singular value decomposition, and was embedded into contourlet domain by quantitative methods. The experimental results demonstrate that the proposed algorithm is invisible, and can distinguish non-malicious operations from malicious operations.

关 键 词：CONTOURLET变换 自嵌入 图像水印 奇异值分解 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]