基于一阶贝塞尔曲线的信息隐藏软件的设计

包括文档,设计,文档字数:12139,页数:23

摘  要
随着信息技术的飞速发展，网络已经影响到社会的政治、经济、文化、军事等各个方面，已成为全球信息基础设施的主要组成部分。但是，网络作为一把双刃剑，在加速人类信息化社会的进程中，也给保障信息安全带来了极大的挑战。作为信息安全的一个重要分支，信息隐藏技术由于具有较好的隐蔽性和易操做性，而逐渐成为信息安全领域的研究热点之一。
本文首先对图像空域的应用进行了分析研究，重点探讨了基于一阶贝塞尔曲线的信息融合算法，并在理论上证明了该算法的可用性；其次对该算法的相应部分进行了改进，并编程实现了载体图像文件对信息的隐藏和恢复功能；最后通过测试与分析，说明本设计所开发的软件可以无损地对数据流信息进行隐藏和恢复；由于此算法合理的设计，最终达到一幅作为载体的位图文件可以隐藏大约占其3/8容量的明文信息，表明该软件具有一定的实用价值。

关键词：信息隐藏技术；图像空域；一阶贝塞尔曲线；隐藏比例；位图

Design of Information Hiding Software Based on One-step Bézier Curve
Abstract
Along with the rapid development of information technology, the network already affects society's politics, economical, cultural, military and social life and so on, and it has become the main constituent of the global information infrastructure. But the network takes as a “double-edged sword”, in humanity information society's advancement, has brought the enormous challenge for the safeguard information security. As an important branch of information security, information hiding technology has a better hiding and operating, gradually becomes the focus of information security domain.
At first, this paper analyzes and researches the application of the picture aerial region, discusses with emphasis based on one-step Bézier curve, and proves the usability of this algorithm; Next this algorithm is improved partly, the programming of the information hiding and restore-function are realized; Finally through the test and the analysis, the software can carry on the hide and information and restoration to the data stream information; As a result of this algorithm reasonable design, as an BMP file of carrier, it can hide approximately its 3/8 capacity of plain information, which shows this software has some practical values.

Key words: Information Hiding Technology; Aerial Region of Picture; One-step Bézier curve; Hiding Proportion; BMP

目  录
文档总页数：19页
1 引言 1
1.1 课题背景 1
1.2 国内外研究现状 1
1.3 本课题研究的意义 1
1.4 本课题的主要工作 2
2 理论基础 2
2.1 空域研究——数字图像加强 2
2.2 BMP图像文件的分析 3
2.3 贝塞尔曲线 4
2.4 基于彩色静止数字图像的信息隐藏算法 5
2.5 一阶贝塞尔曲线对图像的隐藏与恢复 6
2.6 算法的改进 6
2.7 算法可靠性分析及关键参数的选取 7
3 基于一阶贝塞尔曲线的信息隐藏软件的需求分析 8
3.1 任务概述 8
3.2 需求规定 8
3.3 需求描述 8
4 基于一阶贝塞尔曲线的信息隐藏软件的设计方案 9
4.1 对明文组帧 9
4.2 嵌入算法 9
4.3 恢复算法 11
5 基于一阶贝塞尔曲线的信息隐藏软件的实现 12
5.1 基本步骤 12
5.2 辅助程序段 13
5.3 错误判断 14
6 运行测试与分析 14
6.1 软件演示 14
6.2 测试与分析 16
结    论 16
参考文献 17
致    谢 18
声    明 19

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