基于小波变换的混沌图像置乱加密算法  

Image-scrambling Encryption Algorithm Based on Discrete Wavelet Transform

作　　者：穆秀春[1] 张娜[2] 

机构地区：[1]黑龙江科技学院电气与信息工程学院,黑龙江哈尔滨150027 [2]大庆高新技术产业开发区政府采购办,黑龙江大庆163000

出　　处：《现代电子技术》2008年第15期84-86,90,共4页Modern Electronics Technique

摘　　要：给出一种在二维小波变换基础上进行混沌映射,将图像加密的方法。该方法应用二维小波分解算法分解图像信息,再对其实行正弦混沌映射,从而完成图像的加密。解密时,首先对系数进行正弦映射的逆映射,再进行二维小波重构,实现对原始图像的解密。仿真结果证明了该方法的有效性。Based on two- dimension wavelet transformation, an image encryption algorithm is proposed. This method decomposes the image information, then using SIN chaos mapping, and bringing image encryption to access. To decryption, it first inverses mapping the coefficient, two dimension wavelet re- discompose, realizes the decryption of the original image. The result shows that this algorithm is effective.

关 键 词：小波变换 加密算法 正弦映射 混沌加密 

分 类 号：TN309[电子电信—物理电子学]