基于奇异值分解的数字图像水印方法

SVD Based Digital Watermarking Method

随着计算机和网络技术的飞速发展 ,数字图像、音频和视频产品愈来愈需要一种有效的版权保护方法 ,另外通信系统在网络环境下的信息安全问题也日益显露出来 .数字图像水印技术为上述问题提供了一个潜在的解决方案 .所谓水印技术就是将数字、序列号、文字、图像标志等版权信息嵌入到多媒体数据中 ,以起到版权保护、秘密通信、数据文件的真伪鉴别和产品标志等作用 .本文提出了一种新的基于奇异值分解的数字水印算法并且对该方法的理论基础给出分析 .

Digital watermarking is proposed as a solution to the problem of copyright protection of multimedia documents in network environments, Which makes possible to embed a watermark (such as identification data, serials number, text or image etc.) to multimedia documents allowing copyright protection, secret communication, document authentication and so on. A new digital image watermarking method based on SVD (Singular Value Decomposition) is presented, and some theoretical analysis about the algorithm are given. Extensive experimental results show that this method is much more robust than other methods presented before.