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中国科学院大学学报 ›› 2012, Vol. ›› Issue (3): 423-428.DOI: 10.7523/j.issn.2095-6134.2012.3.021

• 计算机科学 • 上一篇    下一篇

基于游程统计和Walsh谱能量分布的调色板图像隐写分析

李红艳1, 赵险峰2, 黄炜1, 盛任农3   

  1. 1. 中国科学院软件研究所信息安全国家重点实验室, 北京 100190;
    2. 中国科学院信息工程研究所 信息安全国家重点实验室, 北京 100195;
    3. 北京电子技术应用研究所, 北京 100091
  • 收稿日期:2011-01-28 修回日期:2011-02-28 发布日期:2012-05-15
  • 通讯作者: 李红艳
  • 基金资助:
    国家自然科学基金(61170281)、北京市自然科学基金(4112063)、中国科学院战略性先导科技专项(XDA06030601)和中国科学院信息工程研究所内部课题(Y1Z0041101,Y1Z0051101) 资助

Steganalysis of palette images based on run-length statistics and Walsh spectrum energy distribution

LI Hong-Yan1, ZHAO Xian-Feng2, HUANG Wei1, SHENG Ren-Nong3   

  1. 1. State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China;
    2. State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100195, China;
    3. Beijing Institute of Electronic Technology and Application, Beijing 100091, China
  • Received:2011-01-28 Revised:2011-02-28 Published:2012-05-15

摘要: 提出一种基于游程统计和Walsh谱能量分布的调色板图像隐写分析方法,利用调色板颜色的奇偶值(parity value,P值)构造P值图像,通过游程统计和Walsh变换提取出46维特征,并用校准技术削弱载体图像差异对分析统计量的干扰.实验表明,该方法适用于EzStego、分量和以及最佳奇偶隐写等调色板图像隐写算法,比奇异颜色分析准确.

关键词: 隐写分析, 最佳奇偶隐写, 调色板图像, 校准, Walsh变换

Abstract: A new method is proposed for palette image steganalysis based on the run-length statistics and the Walsh spectrum energy distribution. The P-value binary image is constructed and then 46-dimensional features are extracted from the run-length histogram and Walsh spectrum coefficients. Calibration is utilized to eliminate varieties caused by hosts. Experiments show that our scheme can successfully detect EzStego, sum of RGB-based steganography, and OPA with low embedding rates and it is superior to some prior arts.

Key words: steganalysis, optimal parity assignment, palette images, calibration, Walsh transform

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