基于混沌映射的数字图像置乱方法  

Digital Image Scrambling Method Based on Chaotic Mapping

作　　者：赵学峰[1] 

机构地区：[1]西北师范大学数学与信息科学学院 兰州730070

出　　处：《微电子学与计算机》2003年第8期136-138,共3页Microelectronics & Computer

摘　　要：文章提出了一种应用混沌映射在空间域对数字图像进行置乱的方法,在加密中利用分段线性映射由密钥生成混沌序列,然后以该序列为参数用面包师映射对图像矩阵置乱,其解密算法是加密算法的逆过程,实验显示该算法对图像加密具有良好的效果。A new method for scrambling digital image in the position space is proposed in this paper,which is based on chaotic mapping.In this method,the piecewise linear mapping is used to generate a chaotic sequence with the key,and the baker's mapping is used to scramble the image matrix with the created sequence.The decrypting operation is the reverse pro-cess of encryption.Experiments show that the proposed algo-rithm has satisfying effect for digital image encryption.

关 键 词：图像加密 图像隐藏 数字图像 置乱 混沌映射 密码学 图像处理 混沌序列 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TN911.73[自动化与计算机技术—计算机科学与技术]