基于混沌的图像隐私防范算法与仿真  

Privacy Protecting Algorithm and Simulation Based on Chaotic Sequence

作　　者：朱士永[1] 陈帅[2] 

机构地区：[1]淮南师范学院物理系 [2]重庆大学光电技术及系统教育部重点实验室

出　　处：《微型电脑应用》2006年第10期59-61,共3页Microcomputer Applications

基　　金：安徽省高等学校自然科学研究项目(2005KJ092);淮南师范学院青年教师自然科学研究项目(2004LKQ01)

摘　　要：为了预防非法偷拍个人隐私,以及追查公开暴光的偷拍隐私照片,采用了基于混沌序列的密钥分配隐藏算法。在进行偷拍的图像中,通过隐藏算法隐藏手机信息。通过混沌迭代算法产生混沌序列,再按照分配密钥将混沌序列分配到图像的各行。将混沌序列转化为自然数混沌序列,得到信息隐藏的初始列。将分配的混沌行、初始列确定的图像像素的低位替换为需要隐藏的信息位。在获得公开的隐私图像中通过侦破算法识别手机的信息。仿真实验结果可见,隐藏了信息的图像和原图像在视觉和灰度等方面都没有差别。In order to protect privacy from taking illegal pictures and investigate the peacebreaker who exposes the privacy, the distribution hidden algorithm of secret key based on chaos cryptogram is introduced in the paper. The information of mobile telephone is hidden in the illegal pictures while being taken through cryptic algorithm. The chaos sequence is produced through chaos algorithm, and is distributed to every row' according to distributing secret key. The initial lines are gotten by converting chaos sequence into natural number. The lower bits of image pixels determined by the rows and lines are replaced by hidden data bits. Then the information of mobile telephone hidden in open private pictures is identifiedthrough detective algorithm. The simulation results indicate there is no difference between the original pictures and the information-hidden pictures.

关 键 词：隐私保护 混沌密钥 分配算法 仿真 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TP309.2[自动化与计算机技术—计算机科学与技术]