Steganalysis Using Fractal Block Codes and AP Clustering in Grayscale Images  

作　　者：Guang-Yu Kang Yu-Xin Su Shi-Ze Guo Rui-Xu Guo Zhe-Ming Lu 

机构地区：[1]with the North Electronic Systems Engineering Corporation. [2]the School of Aeronautics and Astronautics, Zhejiang University

出　　处：《Journal of Electronic Science and Technology》2011年第4期312-316,共5页电子科技学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant No. 61070208;the Postdoctor Foundation from North Electronic Systems Engineering Corporation

摘　　要：This paper presents a universal scheme （also called blind scheme） based on fractal compression and affinity propagation （AP） clustering to distinguish stego-images from cover grayscale images, which is a very challenging problem in steganalysis. Since fractal codes represent the ＂self-similarity＂ features of natural images, we adopt the statistical moment of fractal codes as the image features. We first build an image set to store the statistical features without hidden messages, of natural images with and and then apply the AP clustering technique to group this set. The experimental result shows that the proposed scheme performs better than Fridrich＇s traditional method.This paper presents a universal scheme （also called blind scheme） based on fractal compression and affinity propagation （AP） clustering to distinguish stego-images from cover grayscale images, which is a very challenging problem in steganalysis. Since fractal codes represent the ＂self-similarity＂ features of natural images, we adopt the statistical moment of fractal codes as the image features. We first build an image set to store the statistical features without hidden messages, of natural images with and and then apply the AP clustering technique to group this set. The experimental result shows that the proposed scheme performs better than Fridrich＇s traditional method.

关 键 词：Affinity propagation clustering fractal compression STEGANALYSIS universal steganalysis. 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TP311.13[自动化与计算机技术—计算机科学与技术]