计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (8): 43-45.

• 学术探讨 • 上一篇    下一篇

一种基于分数阶Fourier域的数字水印

王娟锋 穆晓敏 杨守义 齐林   

  1. 郑州大学信息工程学院 郑州大学信息工程学院 郑州大学信息工程学院 郑州大学信息工程学院
  • 收稿日期:2006-07-14 修回日期:1900-01-01 出版日期:2007-03-11 发布日期:2007-03-11
  • 通讯作者: 王娟锋

A Digital Watermark Algorithm Based on Fractional Fourier Transform

JuanFeng Wang   

  • Received:2006-07-14 Revised:1900-01-01 Online:2007-03-11 Published:2007-03-11
  • Contact: JuanFeng Wang

摘要: 本文提出了一种分数阶Fourier域的水印嵌入算法。将一复伪随机序列作为水印信息嵌入到图像的分数阶Fourier域中。分数阶Fourier变换的变换角度(α,β)为水印增加了两个自由度,增强了水印的安全性。仿真结果验证了该算法的有效性。

关键词: 数字水印, 鲁棒性, 分数阶傅里叶变换

Abstract: In this paper, a watermarking technique based on fractional Fourier Transform (FRFT)is proposed. We embed a plural random sequence to the fractional fourier field of the original image. The transformational angle (α,β)add two parameters for the watermarking algorithm, which makes the watermark more security. Via the emulational experimentation of image proved that this watermarking scheme has better performances of security and anti-attack.

Key words: digital watermarking, robustness, fractional fourier transform (FRFT)