摘要
为了有效解决图像加密算法存在的复杂度高、安全性差等问题,提出了一种基于小波变换和混沌映射的图像加密算法。该算法运用两种不同的混沌映射,结合小波变换,从频域角度出发,实现了对原始图像的安全加密。仿真实验表明:文中提出的图像加密算法,不仅能够满足图像加密安全要求,而且实现了速度快、效果好的现实目标。
An image encryption algorithm based on wavelet transform and chaotic map is proposed in order to effec-tively solve complexity and poor security problems existing in image encryption algorithm.From the perspective of frequency domain,this algorithm achieves safe encryption for the original image with two different chaotic maps and combined with wavelet transform.Simulation experiments demonstrate that the proposed image encryption algorithm not only meets the safety requirements for image encryption but also realizes the practical goals with high speed and good effect.
出处
《火控雷达技术》
2016年第1期56-63,68,共9页
Fire Control Radar Technology
基金
陕西省自然科学基金(2015JM8322)
关键词
小波变换
混沌映射
图像加密
wavelet transform
chaotic map
image encryption
