基于小波域相关算法的半易损水印技术  

Correlation algorithm based on wavelet domain of the semi-fragile watermarking technique

作　　者：周书臣[1] 王鹏[2] 崔跃鹏[1] 宋伟[1] 

机构地区：[1]河南大学计算机与信息工程学院,河南开封475001 [2]赛诺贝(北京)市场营销咨询有限公司,北京100123

出　　处：《河南理工大学学报（自然科学版）》2010年第1期122-125,共4页Journal of Henan Polytechnic University（Natural Science）

摘　　要：给出了一种在小波域中嵌入有意义半易损水印的算法,该算法利用特征向量对图像进行的几何变换,能够在不需要原图的情况下对数字图像水印进行提取认证.该算法一方面具有良好的鲁棒性,在图像遭受几何攻击以后仍能检测到水印信息;另一方面具有较好的敏感性,既允许对图像进行一般性处理,又能检测并反映出被篡改区域.实验结果表明:该算法不但对常见信号的处理操作具有很好的鲁棒性,而且还具有良好的抗几何攻击能力.In this paper,an algorithm based on the wavelet transform to embed meaningful semi-fragile watermark is proposed,and the eigenvector is used for the geometric transformation of images which have stronger anti-geometric attacks（RST） for the ability to extract the watermark.On one hand,the algorithm has a good Robust capability,even after the images meeting the geometric attaks,the watermark can be blindly extracted for different application in the detection process.On the other hand,the algorithm has a better sensitivity,the scheme is robust to common manipulations while fragile to malicious distortions.Experimental results show that the algorithm is not only robust to the operation of common signals,but also has good anti-geometric attacks（RST） capacity.

关 键 词：半易损水印 二值图像 小波变换 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]