基于Block-SVD的小波域彩色图像数字水印算法  

Digital watermarking algorithm for color image in wavelet domain based on Block-SVD

作　　者：张玉金[1] 蒋品群[1] 

机构地区：[1]广西师范大学物理与电子工程学院,广西桂林541004

出　　处：《计算机工程与应用》2008年第33期155-157,共3页Computer Engineering and Applications

摘　　要：提出了一种基于Arnold变换和分块奇异值分解(Block-SVD)的小波域彩色图像数字水印算法。该算法采用彩色图像作为载体,灰度图像作为水印,增加了嵌入的信息量。仿真结果表明,该算法具有时间效率高、水印不可见性好、抗攻击能力强等特点,在版权保护方面具有一定的应用价值。In this paper,a digital watermarking algorithm for color image in wavelet domain based on Arnold transformation and Block-SVD is proposed.The algorithm uses a color image as a carrier,a gray image as a watermark,increasing embedded information capacity.The simulation results indicate that the algorithm is characteristic of high time effficiency,good quality for water-marked image and excellent robustness, so it has some practical value for copyright protection.

关 键 词：ARNOLD变换 分块奇异值分解 离散小波变换 数字水印 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]