一种抗几何攻击数字水印改进算法

An Improved Digital Watermarking Algorithm Against Geometry Attacks

主要研究抗几何攻击的数字图像水印算法。利用SIFT特征点匹配的思想对基于图像的视觉特征算法进行改进。实验结果表明,改进算法不仅能够抗常规攻击,而且抗几何攻击能力也非常强,尤其是算法的通用性得到进一步提高。

Digital image watermarking algorithms against geometric attacks are studied. The digital image watermarking algorithms against global geometric attacks are proposed. By using SIFT feature points matching technique,the algorithm based on image visual features is improved. Experimental results show that the improved algorithm which has more strong current can not only against conventional attacks, but also against geometric attacks.