| 基于一个新的混沌系统的数字水印研究 |
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| 引用本文： | 关治洪,王笋. 基于一个新的混沌系统的数字水印研究[J]. 华中科技大学学报(自然科学版), 2004, 32(9): 15-17 |
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| 作者姓名： | 关治洪 王笋 |
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| 作者单位： | 华中科技大学,控制科学与工程系,湖北,武汉,430074;华中科技大学,控制科学与工程系,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目 (6 0 0 74 0 0 9，6 0 2 74 0 0 4 )，中国科学院自动化研究所模式识别国家重点实验室开放课题资助项目 |
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| 摘 要： | 研究了一个新的混沌系统在数字水印中的应用问题，利用数值计算等方法分析了一个新的连续混沌系统较通常的混沌迭代映射具有更大的李雅普诺夫指数的特点．利用混沌系统极其复杂的动态特性，将其作为保密手段．以小波变换为工具，给出了混沌数字水印生成及嵌入的算法，并以一小波视觉模型为基础，做到自适应地嵌入水印．
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| 关 键 词： | 混沌系统 数字水印 李雅普诺夫指数 小波变换 |
| 文章编号： | 1671-4512(2004)09-0015-03 |
| 修稿时间： | 2003-12-01 |
Study of digital watermarking based on a new chaos system |
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| Guan Zhihong Wang Sun Prof., Dept. of Control Sci. and Eng.,Huazhong Univ. of Sci. , Tech.,Wuhan ,China.. Study of digital watermarking based on a new chaos system[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2004, 32(9): 15-17 |
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| Authors: | Guan Zhihong Wang Sun Prof. Dept. of Control Sci. Eng. Huazhong Univ. of Sci. & Tech. Wuhan China. |
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| Affiliation: | Guan Zhihong Wang Sun Prof., Dept. of Control Sci. and Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | A chaos system and its application to digital watermarking were studied. By numerical simulation it was discovered that a new chaotic system had greater Lyapunov exponent than that of most discrete chaotic iterative maps. The extremely compound dynamic behavior of the chaotic attractor was considered as the secrecy tool. Based on the advantages of this chaos system and a visual model, an algorithm of chaotic digital watermarking was presented by means of wavelet transition to obtain good self adaptability. |
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| Keywords: | Chaos system digital watermarking Lyapunov exponent wavelet transition |
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