计算机工程 ›› 2008, Vol. 34 ›› Issue (4): 167-169.doi: 10.3969/j.issn.1000-3428.2008.04.059

• 安全技术 • 上一篇    下一篇

遗传算法在图像DCT域中嵌入数字水印的应用

毛家发1,2,林家骏1,戴 蒙1   

  1. (1. 华东理工大学信息科学与工程学院,上海 200237;2. 上饶师范学院数学计算机系,上饶 334001)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-02-20 发布日期:2008-02-20

Application of Genetic Algorithm for Embedding of Digital Watermark in Image DCT Domain

MAO Jia-fa1,2, LIN Jia-jun1, DAI Meng1   

  1. (1. College of Information Science & Engineering, East China University of Science & Technology, Shanghai 200237;2. Department of Mathematics and Computer, Shangrao Normal College, Shangrao 334001)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-02-20 Published:2008-02-20

摘要: 提出一种新颖的、鲁棒的隐写系统,采用遗传算法将水印信息嵌入到图像的DCT变换域中,实现水印信息的最优化嵌入。该算法提取出的水印无失真,可以改善水印系统不可感知性和不可统计性。实验结果表明,该方法抵抗噪声较强,但其平滑攻击、锐化攻击的能力较差。

关键词: 数字水印, 隐写分析, 隐写术, 遗传算法, 适应度函数

Abstract: This paper proposes a novel robust steganalysis system, adopts the genetic algorithm, embed is the watermark information into the DCT domain, and implements an optimized embedding of the watermark information. The genetic algorithm can keep good perceptual transparency, and don′t make distortion of extracted watermark. Experimental results show that the algorithm has the desired properties such as robustness against noise, but insufficiency against smoothing attack and sharping attack operation.

Key words: digital watermark, steganalysis, steganography, genetic algorithm, fitness function

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