基于位运算和混沌序列的数字图像隐藏技术  

Digital image hiding method based on bit operation and chaotic sequence

作　　者：李鹏[1] 张雪锋[1] 田东平[1] 

机构地区：[1]西安邮电学院信息与控制系,西安710061

出　　处：《计算机工程与应用》2008年第18期175-176,214,共3页Computer Engineering and Applications

基　　金：陕西省2004年自然科学基础研究计划(No.2004A15);陕西省教育厅专项科研计划项目(No.06JK194)

摘　　要：提出了一种改进的数字图像隐藏方法。首先应用混沌系统产生混沌序列,用此混沌序列对原始图像做预处理加密,即做改进的魔方置乱和像素置换;然后对结果图像做进一步基于位运算的隐藏;最后应用评价指标对隐藏效果和安全性进行分析。实验结果表明,该方法具有较高的安全性以及加密效率。An improved image hidding method is proposed based on chaotic sequence and bit operation.Firstly,chaotic sequences are generated based on logisitc mapping and applied to pre-encrypt the image,including improved magic-cube scrambling and pixels permutation;then further processing are used to hide the pre-encrypted image based on bit operation.The effect of hidding is also analyzed by using the method of accessing.Simulation results indicate that the method has good efficiency and security characteristic.

关 键 词：位运算 混沌序列 图像隐藏 图像加密 置乱 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]