一种混沌系统图像全局置乱算法  

An Image Total Scrambling Algorithm Based on Chaos System

作　　者：王青松[1] 高超 李彩云[3] 

机构地区：[1]辽宁大学信息学院,辽宁沈阳110036 [2]周水子边防检查站,辽宁大连116033 [3]东软集团软件产品部,辽宁沈阳110179

出　　处：《辽宁大学学报（自然科学版）》2014年第1期35-39,共5页Journal of Liaoning University：Natural Sciences Edition

基　　金：国家自然科学基金项目(61174115)

摘　　要：利用混沌序列的易生成性、对初始条件强敏感性、类随机性以及整体的伪白噪声统计特性,提出了一种基于混沌系统的图像全局置乱算法.通过对矩阵中的单个图像元素置乱,形成图像置乱矩阵,并同时随机改变了图像的灰度值,具有良好的置乱效果.同时,该算法时间性能较好,而全局置乱矩阵的行和列的像素都显示出排列的强不规则性,因此,该混沌图像全局置乱算法具有较好的安全性.实验结果表明了本算法的正确性.An image total scrambling algorithm based on Chaos System, which utilizes the ease of generation, sensitive dependence on its initial parameters, random-alike and especially white noise alike of chaotic sequences is proposed. The algorithm generates a image total scrambling matrix through chaotic the element of matrix and modifies the gray of pixel randomly,it has better scrambling performance, as the algorithm has lower time complexity, and also the total scrambling matrix the strong irregularity, so the proposed image total scrambling based on chaos system possesses high-level security, some simulations and experiments verified the effectiveness of the algorithm.

关 键 词：图像全局置乱 混沌系统 图像加密 置乱度 图像算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]