计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (33): 155-157.DOI: 10.3778/j.issn.1002-8331.2008.33.048

• 图形、图像、模式识别 • 上一篇    下一篇

基于Block-SVD的小波域彩色图像数字水印算法

张玉金,蒋品群   

  1. 广西师范大学 物理与电子工程学院,广西 桂林 541004
  • 收稿日期:2008-05-16 修回日期:2008-08-14 出版日期:2008-11-21 发布日期:2008-11-21
  • 通讯作者: 张玉金

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

ZHANG Yu-jin,JIANG Pin-qun   

  1. College of Physics and Electronic Engineering,Guangxi Normal University,Guilin,Guangxi 541004,China
  • Received:2008-05-16 Revised:2008-08-14 Online:2008-11-21 Published:2008-11-21
  • Contact: ZHANG Yu-jin

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。

关键词: Arnold变换, 分块奇异值分解, 离散小波变换, 数字水印

Abstract: 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 efficiency,good quality for watermarked image and excellent robustness,so it has some practical value for copyright protection.

Key words: Arnold transformation, block-SVD, Discrete Wavelet Transformation, digital watermarking