中文摘要：

数字水印技术是信息隐藏和版权维护的一种有效方法。文章提出了一种基于B样条曲面和Radon变换的小波域图象数字水印方案，该算法利用B样条曲面的特点，通过B样条曲面的形变来嵌入水印．同时结合Radon变换来解决水印抗几何攻击的问题。实验结果证明该算法的不可见性和鲁棒性。

英文摘要：

Digital watermarking techniques have been considered as an effective solution of information hiding and the protection of copyright.In this paper,a new image digital watermarking algorithm based on B-spline surface and Radon Transformations in the wavelet domain is proposed.This algorithm makes use of the changing shape of B- sp｜ine surface to embed watermark and withstand the common geometric attacks by combining Radon transformations. The experimental result demonstrates that the proposed algorithm is able to ensure that the watermark is invisible to human eyes and is robust for a variety of attacks.