一种可区分内容或水印篡改的图像认证算法  

An image authentication algorithm with discrimination of tampers on image or watermarking

作　　者：秦娜[1] 杨军彦[1] 

机构地区：[1]西北师范大学计算机科学与工程学院,甘肃兰州730070

出　　处：《微型机与应用》2013年第21期35-36,40,共3页Microcomputer & Its Applications

摘　　要：提出了一种基于Contourlet变换的可区分内容或水印篡改的图像认证算法。在载体图像的Contourlet变换域分别嵌入认证水印和恢复水印,作为区分图像内容被篡改还是水印被篡改的依据。仿真实验表明,该算法不但能准确定位篡改位置,而且能区分篡改类型,在一定条件下还可以恢复被篡改的区域。Based on Contourlet transform, an image authentication algorithm with discrimination are embedded into the Contourlet field of image of tampers on image or watermarking is put forward. In the algorithm, the authentication watermarking and the recovery watermarking, which are used for discrimination of tampers on image or watermarking. The simulation experiment demonstrates that the algorithm can localize the tampered area accurately, distinguish the type of tampering and restore the tampered content conditionally.

关 键 词：CONTOURLET变换 图像认证 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]