计算机工程 ›› 2012, Vol. 38 ›› Issue (21): 138-140,144.doi: 10.3969/j.issn.1000-3428.2012.21.037

• 安全技术 • 上一篇    下一篇

小波系数统计特征量密写分析方法

吴雪垠,吴 谨,刘 劲,吴建国   

  1. (武汉科技大学信息科学与工程学院,武汉 430081)
  • 收稿日期:2012-01-13 出版日期:2012-11-05 发布日期:2012-11-02
  • 作者简介:吴雪垠(1985-),女,硕士研究生,主研方向:信息隐藏,数字图像处理;吴 谨,教授、博士生导师;刘 劲,讲师;吴建国,副教授
  • 基金项目:
    国家自然科学基金资助项目(60974012)

Steganalysis Method of Wavelet Coefficient Statistical Feature Quantity

WU Xue-yin, WU Jin, LIU Jin, WU Jian-guo   

  1. (College of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China)
  • Received:2012-01-13 Online:2012-11-05 Published:2012-11-02

摘要: 基于人类视觉系统(HVS)抗统计分析的小波域密写通过减小载体图像的小波系数绝对值来嵌入秘密信息,会导致零小波系数的概率急剧增加。针对该问题,提出小波系数统计特征量密写分析方法。在分析载体图像和载密图像小波系数直方图的基础上,通过计算图像的小波系数统计特征量判断是否存在秘密信息,由此实现密写分析。理论分析和实验结果表明,该方法能检测出基于HVS抗统计分析的小波域密写。

关键词: 密写分析, 小波变换, 人类视觉系统, 直方图, 小波系数统计特征量

Abstract: Steganography on wavelet domain against statistical based on Human Visual System(HVS) embeds secret information by decreasing the absolute value of wavelet coefficients, so it dramatically increases the probability to zero of wavelet coefficients. In order to analyze this steganography method, this proposes steganalysis method of wavelet coefficient statistical feature quantity. By analyzing the wavelet coefficients histogram of cover-images and stego-images, and calculates wavelet coefficients statistical feature quantity of images, it judges the presence of secret information, so that the steganalysis method is realized. Theory analysis and experimental results show that the method can announce the presence of hidden information.

Key words: steganalysis, wavelet transform, Human Visual System(HVS), histogram, wavelet coefficient statistical feature quantity

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