摘要
基于混沌映射的图像置乱是图像加密的一种常用方法,加密过程利用Logistic混沌动力学系统过程既非周期又不收敛,且对初始条件敏感的特性,产生实数值混沌序列。对数字图像进行空域置乱和分数傅里叶变换,实现图像的双重加密。计算机模拟表明该方法具有很好的加密效果。
The picture scrambling algorithms based on chaos are frequently used for images secure communications. This computing method harnesses the randomicity and the sensitivity of the original value of the Logistic chaotic sequence, to generate the real value sequence. This paper presents an image encryption technology based on chaotic sequences and fractional Fourier transform. The experimental results show that the technology is valid and has good security.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第12期172-174,共3页
Computer Engineering
基金
国家自然科学基金资助项目(60572129)
关键词
混沌
分数傅里叶变换
图像置乱
图像加密
Chaos
Fractional Fourier transform
Image scrambling
Image encryption
