一种利用相角对加性隐写模型进行分析的方法  

Steganalysis of additive modelable information hiding using phase angles

作　　者：杨刚[1] 张敏情[1,2] 张震[1] 

机构地区：[1]武警工程大学电子技术系网络与信息安全武警部队重点实验室,西安710086 [2]西北工业大学计算机学院,西安710072

出　　处：《计算机应用研究》2013年第11期3411-3413,共3页Application Research of Computers

基　　金：陕西省自然科学基金基础研究项目(2012JM8014);武警工程大学基础研究基金资助项目(WJY201123)

摘　　要：基于图像在加性隐写模型下隐写前后差分直方图离散傅里叶变换与隐写信息离散傅里叶变换间的对应关系,从隐写前后差分直方图离散傅里叶变换相角的变化入手,提取特征,在理论上加以论证并从实验上得到验证。对UCID V2标准图库进行实验,结果表明,本方法对加性隐写模型具有很好的检测效果。Based on the relationship between the DFT of probability mass function （PMF） of stegonoise and the DFT of diffe-rence histogram of cover image and stegoimage, this paper began with the difference of phase angles which were computed from the DFT of cover imag and stegoimage, then extracted the feature, finally it proved and verified our theory with the experiments. The results of the experiment using the image library of UCID V2 shows that this methord has a good ability to detect the original images from stegoimages which are embeded with additive model.

关 键 词：隐写分析 差分直方图 离散傅里叶变换 相角 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]