摘要： 研究了一种经典的基于Fourier-Mellin变换的水印算法，并提出了一些改进，实验证明这样的改进是可行、有效的。相信，这一工作有助于更强鲁棒性的水印算法的设计。

关键词: 数字水印, Fourier-Mellin变换, 几何变换攻击

Abstract: This paper investigates a classical algorithm and presents some improvements, which is proved applicable and effective. It is believed that the work will help the design of robust watermarks.

中图分类号: 

• TP309