一种基于图象分块的混沌水印算法  

A Chaotic Digital Image Watermarking Algorithm Based on Blocked Image

作　　者：张晓丹[1] 李静[1] 

机构地区：[1]吉首大学数计学院,吉首416000

出　　处：《湖南工程学院学报（自然科学版）》2009年第4期52-54,共3页Journal of Hunan Institute of Engineering(Natural Science Edition)

基　　金：吉首大学校级科研资助项目(07JDZC016)

摘　　要：将混沌理论引入数字水印算法,提出并实现了Logistic映射产生的混沌序列嵌入小波域数字水印算法.实验证明该水印嵌入算法易于实现,且具有较强的鲁棒性和很好的视觉效果,是一种实际可行的数字水印算法.A robust digital watermarking scheme based on logistic chaotic sequences is proposed.The watermark is pre-processed by logistic chaotic sequences and spreading adaptively over the image wavelet domain.The experimental results demonstrate that the watermark is robust to general image processing techniques and provides considerable robustness and imperceptibility.

关 键 词：水印算法 混沌 LOGISTIC映射 DCT变换 

分 类 号：TP334.4[自动化与计算机技术—计算机系统结构]