摘要： 针对几何攻击对数字水印的巨大破坏性，提出一种抗几何攻击水印算法，将水印信息隐藏于图像圆谐-傅里叶矩的幅度变化中。进行水印检测时只要比较受攻击图像的圆谐-傅里叶矩与密钥的差别，就能提取到水印序列。实验结果表明，该算法对旋转攻击、缩放、JPEG压缩和其他噪声攻击具有良好鲁棒性。

关键词: 数字水印, 圆谐-傅里叶矩, 矩幅度, 旋转和缩放攻击

Abstract: Aiming at the serious destructiveness of geometrical attack to digital watermark, this paper proposes a geometrical attack resisted watermark algorithm. This algorithm hides the watermark information among Harmonic-Fourier moment variation of the image. The watermark sequence can be extracted by comparing the Harmonic-Fourier moment of the attacked image with the key during the watermark detection. Experimental results show that the algorithm is robustness to rotation attacks, scaling, JPEG compression and other noise attacks.

Key words: digital watermark, Harmonic-Fourier moment, moment-magnitude, rotation and scaling attack

中图分类号: 

• TP391.4