计算机工程与科学2009，Vol.31Issue(12)：44-48,5.DOI:10.3969/j.issn.1007-130X.2009.12.013
一种基于混沌系统的多功能彩色图像数字水印算法
A Multifunctional Watermarking Algorithm for Color Images Based on Chaotic Systems
丁文霞 1王浩 1刘立勇1
作者信息
- 1. 国防科技大学电子科学与工程学院,湖南,长沙,410073
- 折叠
摘要
Abstract
Nowdays embedding only one kind of watermark in digital products can not satisfy people's demand any more,and the multiple or multifunctional watermarks are required in many situations. A space and the DCT field combined watermarking algorithm for color images based on the good randomicity and the initial value sensitivity of chaotic dynamical systems is proposed in this paper. In the algorithm, a fragile watermark based on chaotic random keys and the LSB technique is repeatedly embedded in the blue layer of the color image, which is used for integrality authentication and sophistication detection. At the same time, two robust watermarks are respectively embedded in the red layer's direct current (DC) coefficients and in the green layer's intermediate frequency coefficients of the image's DCT field. These watermarks are used for the copyright authentication and appended information detection, etc. The experimental results show that the algorithm can well realize the multifunctional watermarking method.关键词
混沌/置换群/多功能水印/多重水印/鲁棒水印/脆弱水印Key words
chaos/permutation group/multifunctional watermarking/mulriple watermarking/robust watermark/fragile watermarking分类
信息技术与安全科学引用本文复制引用
丁文霞,王浩,刘立勇..一种基于混沌系统的多功能彩色图像数字水印算法[J].计算机工程与科学,2009,31(12):44-48,5.
