摘要
在传统算法的基础上,结合小波理论和混沌理论及置乱方法,研究实现了一种基于小波变换的图像置乱加密算法,首先对图像进行二维离散小波变换,再进行混沌加密。实验结果证明该算法加密效果良好,加密后图像的直方图分布均匀且峰值信噪比较高。
Based on the traditional algorithm, the combining the wavelet theory, chaos theory and method of scrambling, the paper studies a image scrambling encryption algorithm based on wavelet transform. Firstly, it makes a transform for 2-d discrete wavelet image, and then to the chaotic encryption. The experimental results show that the effect of encryption algorithm is good, and histogram of encrypted image is equally distributed and with high value of PSNR.
出处
《山西电子技术》
2011年第4期53-54,共2页
Shanxi Electronic Technology
关键词
数字图像
加密算法
小波变换
图像置乱
digital image
encryption algorithm
wavelet transform
image scrambling
