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