图像信息隐藏检测及其在互联网监管中的应用

本文分别从空间域、变换域分析了常用的图像信息隐藏技术和图像信息隐藏检测技术,研究了一种可对DFT域、DCT域和DWT域图像信息隐藏实现通用盲检测的基于频率域差分直方图能量分布分析的通用信息隐藏检测方法,并在此基础上设计了互联网内容监管网关中的图像信息隐藏检测模块,进行了功能性实验,表明该方法能有效检测图像信息隐藏。

Research and Realization of Steganalysis on Images in Internet Content Security

In this paper,common techniques of steganography and steganalysis on spatial domain and transformation domain are analyzed separately.A steganalysis technique based on spectrum analysis of difference histogram offrequency coefficients,which is universal in image's frequency domain such as DFT,DCT or DWT domain,is researched.And a steganalysis technique based on spectrum analysis of difference histogram of frequency coefficients,which is universal in image's frequency domain,is re- searched.The author designed a steganalysis module of images and used them in the Internet content security gateway and the functional experiments showed the proposed method can detect the steg-images efficiently.