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计算机工程 ›› 2011, Vol. 37 ›› Issue (14): 125-127. doi: 10.3969/j.issn.1000-3428.2011.14.041

• 安全技术 • 上一篇    下一篇

基于像素差和模函数的隐写方法

李 军 1,潘 峰 1,2,李秀广 1,3   

  1. (1. 武警工程学院电子技术系网络与信息安全武警部队重点实验室,西安 710086;2. 西安电子科技大学网络信息安全教育部重点实验室,西安 710071;3. 武警工程学院信息安全研究所,西安 710086)
  • 收稿日期:2011-01-10 出版日期:2011-07-20 发布日期:2011-07-20
  • 作者简介:李 军(1987-),男,硕士,主研方向:信息隐藏;潘 峰,副教授;李秀广,讲师
  • 基金资助:
    国家自然科学基金资助项目(60842006);武警部队科研基金资助项目(wjk2009020)

Steganography Method Based on PVD and Modulus Function

LI Jun 1, PAN Feng 1,2, LI Xiu-guang 1,3   

  1. (1. Key Laboratory of Network & Information Security under the Chinese Armed Police Force, Electronic Department, Engineering College of Armed Police Force, Xi’an 710086, China; 2. Key Laboratory of Network & Information Security of the Ministry of Education, Xidian University, Xi’an 710071, China; 3. Institute of Information Security, Engineering College of Armed Police Force, Xi’an 710086, China)
  • Received:2011-01-10 Online:2011-07-20 Published:2011-07-20

摘要: 传统的利用像素差(PVD)进行隐写的方法,通常只考虑水平方向的PVD而忽略垂直方向的PVD。为此,将原始图像分成互不相交的2×2的像素块,在水平和垂直2个方向上分别采用基于模函数的方法和普通PVD的方法进行隐写,并针对2种方法的特点对越界情况进行调整。实验结果表明,该方案能改善隐写图像的质量,提高嵌入容量,并能抵抗常见攻击。

关键词: 像素差, 隐写, 模函数, 嵌入容量

Abstract: The traditional steganography methods with Pixel Value Differencing(PVD) usually only deal with the PVD in the horizontal direction but ignore the vertical one. In this paper, the cover image is divided into 2×2 nonoverlapping blocks, then the modulus function method is used in horizontal direction and the simple PVD method is used in vertical direction for steganography. The falling-off-boundary problem is solved. Experimental results show that the proposed approach provides higher stego-image quality, larger embedding capacity, and can against common attacks.

Key words: Pixel Value Differencing(PVD), steganography, modulus function, embedding capacity

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