摘要
提出了一种混沌神经网络加密压缩数字图像的算法。首先,将原始图像进行二维小波变换后,转换成小波域上的小波系数,然后对小波系数进行嵌入零树小波编码。接着,将码流中"1"的位置取出,存入一个矩阵中,对此矩阵进行混沌神经网络加密。该加密算法具有以下特征:速度快、无失真、安全性高。仿真试验结果表明,该算法能得到令人满意的结果。
A compressed digital image encryption algorithm based on chaotic neural network is proposed.First,by two dimension wavelet transform,the original image is transformed into wavelet coefficients,which are coded by embedded zerotree wavelet(EZW).Then putting the position of '1' to the matrix,the matrix is encrypted based on a chaotic neural network.The features of the algorithm are more quickly encrypted speed,no distortion and high security.Examinations have shown that preliminary results are satisfactory.
出处
《电视技术》
北大核心
2009年第S2期82-83,共2页
Video Engineering
关键词
混沌神经网络
分段线性混沌映射
嵌入零树小波编码
图像加密
chaotic neural network
piecewise linear chaotic map(PLCM)
embedded zerotree wavelet(EZW) code
image encryption
