计算机工程

• 安全技术 • 上一篇    下一篇

一种结合整数规划和YASS的图像隐写算法

忻佳琳,王士林   

  1. (上海交通大学信息安全工程学院,上海 200240)
  • 收稿日期:2012-09-12 出版日期:2013-10-15 发布日期:2013-10-14
  • 作者简介:忻佳琳(1988-),女,硕士研究生,主研方向:信息安全,图像处理;王士林,副教授
  • 基金项目:
    国家自然科学基金资助项目(60702043)

An Image Steganography Algorithm Combined with Integer Programming and YASS

XIN Jia-lin, WANG Shi-lin   

  1. (College of Information Security Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2012-09-12 Online:2013-10-15 Published:2013-10-14

摘要: 为提高图像隐写率,在YASS算法的基础上,提出一种改进的图像隐写算法。分析不同图像分块离散余弦变换系数之间的固有联系,借鉴整数规划的思想设计迭代算法,对已隐写的载体进行数据校正。使用98维马尔科夫通用图像检测方法进行实验,结果表明,该算法能减少YASS隐写过程中由JPEG图像压缩引入的误码,提高隐写率,同时可有效抵抗通用隐写检测。

关键词: YASS算法, 图像隐写, 整数规划, JPEG图像, 离散余弦变换

Abstract: In order to increase the steganography rate, this paper proposes a new scheme of steganography which is based on YASS algorithm. After discussing the inherent relationship between Discrete Cosine Transform(DCT) coefficients in different blocks, a method of iterative programming is proposed which is referenced to integer programming, and the carrier which has steganography has been corrected. In aspect of anti-detection, 98 degree’s Markov steganalysis method is used to detect the stego images. Experimental result shows that this optimization algorithm is proved to effectively decrease the errors caused by JPEG compression during YASS steganography. In this way, steganographic rate is increased to a great extent. This method is also proved to get the same outstanding performance in common anti-detection.

Key words: YASS algorithm, image steganography, integer programming, JPEG image, Discrete Cosine Transform(DCT)

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