数字图像水印算法抗几何攻击鲁棒性研究

Study on the Robustness of Digital Image Watermarking Algorithms to Geometric Attacks

数字水印对抗各种攻击的鲁棒性一直是水印研究者所关注的一个焦点,其中几何攻击是实际应用中经常出现的一种攻击方式,而常规的水印算法对几何攻击却无能为力,因此水印算法对几何攻击的鲁棒性被认为是数字水印技术走上商用的一个关键点。该文总结了已有的典型抗几何攻击数字水印算法,从理论分析和实验验证两个角度对他们进行了比较和分析,并指出了下一步可能的发展方向,对抵抗几何攻击水印算法的发展具有一定的指导作用。

The robustness of digital watermarking to various attacks is a focus of researchers, while geometric attacks are very common attacks in practical applications. But conventional watermarking algorithms are helpless in face of geometric attacks, so the robustness to geometric attacks is called a bottleneck of commercial digital watermarking. The existing typical watermarking algorithms robust to geometric attacks are summarized, then they are compared and analyzed from the points of theoretical analyses and experimental validations. The possible development trends are pointed out, which can instruct the development of watermarking algorithms resistant to geometric attacks.