计算机与现代化 ›› 2011, Vol. 1 ›› Issue (8): 171-173,.doi: 10.3969/j.issn.1006-2475.2011.08.047

• 信息安全 • 上一篇    下一篇

基于图像特征点的公钥水印算法

胡 盈,肖竞华   

  1. 武汉科技大学计算机科学与技术学院,湖北 武汉 430065
  • 收稿日期:2011-04-18 修回日期:1900-01-01 出版日期:2011-08-10 发布日期:2011-08-10

Public-key Watermarking Algorithm Based on Image Feature Keypoints

HU Ying, XIAO Jing-hua   

  1. College of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan 430065, China
  • Received:2011-04-18 Revised:1900-01-01 Online:2011-08-10 Published:2011-08-10

摘要: 对于现在公钥水印算法一些抗几何攻击能力弱的问题,提出一种基于图像特征点的公钥水印算法。通过Harris-Laplace算法提取图像的特征点,构造局部特征区域,并在这些区域内做DCT变换和水印信息的嵌入,使得嵌入水印后的图像可以更好地抗RST攻击。

关键词: 公钥数字水印, Harris-Laplace算法, DCT

Abstract: Aiming at the weak robustness to the geometric attacks of the public-key watermarking algorithm, a public-key watermarking algorithm based on image feature keypoints is proposed. The feature keypoints of image are extracted by Harris-Laplace algorithm, the watermarking in the DCT domain of the feature zone is embedded, so it can rest the RST attack.

Key words: public-key digital watermark, Harris-Laplace algorithm, DCT

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