基于超混沌序列的自适应数字图像隐藏算法

文章用超混沌映射快速生成无碰撞伪随机索引序列,进而实现图像的置乱隐藏,超混沌映射的初值敏感性,使隐藏有足够大的密钥空间,极大地提高了系统的安全性,文中给出进行灰度图像隐藏的空域置乱混合隐藏算法,还研究了将灰度图像隐藏到彩色图像及将彩色图像隐藏到彩色图像的方法.实验分析显示,本文算法简单易行,隐藏信息量大,并且具有一定的鲁棒性.

An Algorithm for Adaptive Images Hiding Algorithm Based on Hyperchaotic Sequences

In this paper, Hyperchaotic mapping is used to generate non-collision index sequences with the key. Based on the created sequences, new kinds of digital image information hiding schemes are presented.Firstly,a gray scale secret image can be hidden in one gray carrier image by Scrambling and blending.Then,a gray scale secret image can be hidden in one color carrier image and a color secret image can be hidden in one color carrier image.Experiments show that the schemes can be expediently realized and they are robust in some extent.