Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (21): 75-77.DOI: 10.3778/j.issn.1002-8331.2008.21.020

• 网络、通信、安全 • Previous Articles     Next Articles

Improvement of steganalysis method for LSB matching

CHENG Dao-fang,LI Xiao-long,YANG Bin   

  1. Institute of Computer Science & Technology,Peking University,Beijing 100871,China
  • Received:2008-02-02 Revised:2008-04-24 Online:2008-07-21 Published:2008-07-21
  • Contact: CHENG Dao-fang

一种关于LSB matching的隐写分析方法的改进

程道放,李晓龙,杨 斌   

  1. 北京大学 计算机科学技术研究所,北京 100871
  • 通讯作者: 程道放

Abstract: LSB matching is a widely-used steganographic scheme for digital images.However,the study on steganalysis of LSB matching is just in the early stage.This paper discusses a recently proposed steganalysis method for LSB matching,which is based on the local extrema of image’s histogram.Point out the defects of the above scheme,and propose a new one for detecting LSB matching by using the calibration method.Extensive experimental results show that the new discriminator is easy to implement and perform much better than the old one.

Key words: information hiding, steganalysis, LSB matching, histogram

摘要: LSB matching是一种广泛使用的数字图像隐写方法,但关于其隐写分析的工作目前还不多。详细讨论了最近提出的一种基于图像直方图局部极值点的关于LSB matching的隐写分析方法,指出了该方法的不足,并结合图像采样技术给出了一种新的用于LSB matching的检测子。实验表明,提出的检测子实现简单并且具有更好的检测效率。

关键词: 信息隐藏, 隐写分析, LSB matching, 直方图