一种基于混沌序列的DCT域盲数字水印算法.doc

一种基于混沌序列的DCT域盲数字水印算法.doc一种基于混沌序列的DCT域盲数字水印算法
曹江中I戴青云】谭志标2钟良2
() (2广东新粤智能交通研究院，广东广州510101)
摘要：文章提出了 一种基于混沌序列的DCT城盲数字水印缺入和检测新算法。 ,只有利用正确密钥才能提取 水印，保证了算法的安全性;提取水印时不需要宿主图像，实现了盲水印技术。实驗仿真表M T»算法筒单易行且 对常见的水印攻击有较好的鲁棒性和实效性。
关键词：敎字水fP’LugiBtic映射，离敢余械变换(DCT) 中图法分类号：TP3O9 文献标识码：A 文章编号：1000-7180(2006)04-039-03
A New Algorithm For Blind Digital Watermarking Based
on Chaotic Sequences
CAO Jiang-zhong1, DAI Qing-yun1, TAN Zhi-biao2, ZHONG Liang2
(1 Information Engineering College, GuangDong University of Technology, GuangZhou 510090 China)
(2 XinYue Intelligent Transport Research Institute, GuangZhou 510101 China)
Abstract: In this paper, a new algorithm for blind digital watermarking based on chaotic sequences is presented. .It de・ cides the place where watermarking is embedded through the chaotic sequences, and the watermarking is only retrieved throu^i the right secret key. Hie retrieval of watermarking need not original image, so it is a blind watermarking algorithm, Hie intention of embedding watermarking is based on the JPEG qualtization table, which help to embed more information. TTie experimental results Hhow that this algorithm is easy to perform and is robust to mo»t common signal processing attacks and can meet demand of the watermarking to a certain extent.
Key words: Digital watermarking, Logistic map, Discrete cosi