一种抗几何攻击盲数字水印方法

Blind digital watermarking method against geometric attack

提出了一种抵抗几何攻击的数字图像水印方案,主要针对的是缩放攻击和剪切攻击。通过采用在每个分片上重复嵌入水印,并在载体图像上确定抗缩放攻击网格来抵抗剪切攻击和缩放攻击。实验证明,该方法能较好地恢复图像、提取水印信息,能够有效地抵抗剪切攻击和缩放攻击。

A digital watermarking method to resist geometric attack, mainly the scaling attack and the cropping attack, was presented. We used the method of embedding the watermarking to every block and the method of fixing a resisting scaling grid to be against the scaling attack and the cropping attack. The experiment proves that this method can recover the image, and can detect the watermark, and can effectively resist the scaling and the cropping attack.