基于Arnold变换和Lorenz混沌系统的彩色水印图像加密算法  

Encryption Algorithm of Colored Watermark Image Based on Arnold Transform and Lorenz Chaos System

作　　者：王丽丽[1] 

机构地区：[1]宝鸡职业技术学院电子信息工程系,宝鸡721008

出　　处：《计算机系统应用》2012年第6期121-125,共5页Computer Systems & Applications

摘　　要：该算法利用Arnold变换以及彩色图像的置乱度定义,求解Lorenz混沌系统的动力学方程,得到三个混沌序列;然后对Arnold置乱后的每个颜色分量进行置乱处理。仿真实验结果表明,该算法克服了Arnold变换和Lorenz混沌系统的缺点,能够抵抗多种攻击,使彩色水印图像具有较高的安全性。This algorithm uses the Arnold transformation and the color image scrambling definition, to solve the Lorenz chaos system＇s dynamic equation, to obtain three chaos sequences. Then it carries on scrambling processing after Arnold scrambling＇s each color component. The simulation experiment result indicated that this algorithm has overcome the Arnold transformation and the Lorenz chaos system＇s shortcoming, can resist many kinds of attacks, enables the high security of the colored watermark image.

关 键 词：ARNOLD变换 LORENZ混沌系统 算法 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]