摘要： 图像加密是图像信息安全的核心技术。它是保护图像安全的一种直接的、有效的手段。因此，研究图像加密具有重要的理论和现实意义。论文以介绍混沌的特性为基础，对基于混沌的图像加密技术进行了较为深入的研究，论文的工作及贡献主要体现在以下几个方面：较为系统的阐述了加密的各种基础知识、对当前图像加密的发展状况进行了详细的分析、归纳和总结，并给出个人的观点和看法；从多方面对混沌理论基础作了详细的阐述、讲解和分析，用MATLAB编写程序演示图像加密效果，并介绍了多种典型混沌图像加密方法；通过介绍几种不同的加密方法使人更加直观地了解图像加密的原理，并结合各加密原理的特点给出个人的见解。8744
关键词： 图像加密；混沌；MATLAB；加密软件；
Image encryption technique
Abstract: Image encryption is the core of information security technology. It is to protect the safety of image by a direct and effective means. So the image encryption has important theoretical and realistic significance. Paper on the basis of introduce the characteristics of chaos. the chaos based on image encryption technology has carried on the thorough research, paper work and contribution mainly embodied in the following aspects: systematically expounds the encryption of all kinds of basic knowledge, the development of the current state of the image encryption has carried on the detailed analysis, induction and summary, and give personal views and opinions; Chaos theory basis from various perspectives has made the detailed elaboration, interpretation and analysis, using MATLAB demo image encryption effect, and introduces several typical chaotic image encryption method; By introducing several different encryption methods, it makes people more intuitive understanding of the principle of image encryption, and combine the characteristics of the various encryption principle and give personal opinions.
Keywords: Image encryption; chaos; MATLAB; Encrpytion software;
目录
摘要 i
Abstract i
目录 ii
1 绪论 1
1.1 课题的目的和意义 1
1.2 国内外研究现状与水平 2
1.3 发展趋势 3
1.4 调研情况 3
2 图像加密的原理 8
2.1 混沌加密原理 8
2.1.1 混沌的定义 8
2.1.2 映射 10
2.1.3 混沌运动的主要特征及判别依据 12
2.1.4 混沌的应用领域 15
2.1.5 混沌系统的信息安全应用设计思路和原则 16
2.1.6 混合特性原则 17
2.2 矩阵变换/像素置换 18
2.3 秘密分割与秘密共享 18
2.4 现代密码体制 19
3 图像加密的设计应用及思路 20
3.1 设计应用 20
3.1.1 MATLAB简介 20
3.1.2 MATLAB的优势和特点 21
3.2 设计思路 23
3.2.1 现阶段可用设计思路简介 23
3.2.2 此次设计中所选的设计思路 24
4 图像加密的过程阐述 25 MATLAB数字图像的加密方法与应用展示:http://www.751com.cn/zidonghua/lunwen_7188.html