摘要
本文介绍两种水印算法:基于DCT的数字水印算法及基于SVD的数字水印算法。实现了DCT及SVD的数字水印嵌入、提取算法,并探讨各种攻击方式,实验结果显示,嵌入的水印具有不可见性,重点做了比较实验,比较了两种常见算法的优缺点。
In this paper the hypothesis test procedures of two different algorithms using DCT and SVD are analysed. These algorithms on embedding and extracting of digital watermarking based on DCT and SVD are implemented on Matlab platform. These tests prove that the methods are robust. The advangtages and disadvantages of these two algorithms are analysed also.
出处
《计算机与现代化》
2009年第9期87-91,共5页
Computer and Modernization
基金
山东省自然科学基金会资助项目(Z2004G02)
山东省青年科学奖资助项目(03BS003)
山东教育局科学技术资助项目(J05G01)
关键词
数字水印
离散余弦变换
奇异值分解
鲁棒性
digital watermark
DCT ( Discrete Cosine Transform)
SVD ( Singular Value Decomposition)
robustness