一种基于排列变换的数字图像置乱方法  

Digital Image Scrambling Method Based on Permutation Transformation

作　　者：刘建华[1] 袁岁维[1] 范九伦[1] 

机构地区：[1]西安邮电学院信息与控制系,陕西西安710061

出　　处：《微电子学与计算机》2010年第6期174-176,180,共4页Microelectronics & Computer

摘　　要：利用排列变换具有的强不规则性,提出一种数字图像置乱加密方法.借助混沌系统生成的混沌序列得到所需的排列数组,通过对排列数组的数值进行匹配操作,达到对图像行(列)互换的目的,实现对图像的置乱加密.方法对图像大小没有限制.仿真结果表明:该方法具有理想的加密效果和较高的安全性.Used the strong irregularity of permutation transformation,a digital image scrambling encryption method is proposed.Using the chaos sequences obtained by chaos system to generate the required permutation arrays and through match operation of the array to achieve the purpose of exchange the rows（columns）of image,the purpose to encrypted images is arrived.The proposed method has no limitation for the size of image.Simulation results show that the proposed method has the ideal encryption effect and higher security.

关 键 词：排列变换 图像置乱 混沌系统 匹配操作 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]