计算机应用 ›› 2013, Vol. 33 ›› Issue (04): 1074-1076.DOI: 10.3724/SP.J.1087.2013.01074

• 信息安全 • 上一篇    下一篇

基于双边转移概率矩阵的JPEG图像隐写检测

赵艳丽1,王兴2   

  1. 1. 南阳师范学院 计算机与信息技术学院,河南 南阳 473061
    2. 南阳师范学院 软件学院,河南 南阳 473061
  • 收稿日期:2012-10-30 修回日期:2012-11-30 出版日期:2013-04-01 发布日期:2013-04-23
  • 通讯作者: 赵艳丽
  • 作者简介:赵艳丽(1978-),女,河南南阳人,讲师, 硕士,主要研究方向:图像处理、多媒体;王兴(1974-),男,河南南阳人,副教授,主要研究方向: 计算机网络、数据库。
  • 基金资助:

    河南省重点攻关项目(082102210067,112102210408)

Steganalysis of JPEG images based on bilateral transition probability matrix

ZHAO Yanli1,WANG Xing2   

  1. 1. College of Computer and Information Technology, Nanyang Normal University, Nanyang Henan 473061, China
    2. School of Software, Nanyang Normal University, Nanyang Henan 473061, China
  • Received:2012-10-30 Revised:2012-11-30 Online:2013-04-01 Published:2013-04-23
  • Contact: ZHAO Yanli

摘要: 针对当前基于JPEG图像的典型隐写算法,基于离散余弦变换(DCT)域分块内及分块间相邻系数之间的相关性进行分析,通过将相邻三个系数的中间位置的系数作为条件,统计两边系数的条件分布概率矩阵,将提取的所得矩阵作为隐写检测敏感特征,提出了一种基于DCT系数双边转移概率分布的JPEG图像隐写检测算法。实验结果表明,在不同嵌入率下,该算法的检测性能均优于已有检测算法。

关键词: 隐写, JPEG图像, 系数相关性, 双边转移概率, 隐写检测

Abstract: For the typical steganographic algorithms in JPEG images, this paper firstly analyzed the correlation between neighboring coefficients of intra- and inter-block in Discrete Cosiine Transform (DCT) domain, and then extracted the conditional distribution probability matrix of the bilateral coefficients as the sensitive steganalytic features by taking the middle coefficient of three neighboring coefficients as the condition. At last, this paper proposed a JPEG image steganalytic algorithm on a basis of bilateral transition probability distribution of DCT coefficients. The experimental results show that, for different embedding ratios, the algorithm proposed in this paper outperforms the existing algorithms.

Key words: steganography, JPEG image, coefficients correlation, bilateral transition probability, steganalysis

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