| 基于修正Chirp-fourier变换的数字水印算法 |
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| 引用本文： | 朱春华,穆晓敏,张峰.基于修正Chirp-fourier变换的数字水印算法[J].计算机工程,2006,32(17):213-215. |
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| 作者姓名： | 朱春华 穆晓敏 张峰 |
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| 作者单位： | 1. 河南工业大学信息科学与工程学院,郑州,450000
2. 郑州大学信息工程学院,郑州,450000 |
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| 摘 要： | 提出了一种基于修正Chirp-fourier变换的数字水印算法，该算法直接在空域中，嵌入Chirp信号作为水印信息，用修正Chirp-fourier变换对这一特定结构的水印信息进行盲检测。仿真结果表明，该算法透明性好、检测速度快，在对常见的图像处理过程中具有鲁棒性。
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| 关 键 词： | 数字水印 Chirp信号 Chirp-fourier变换 |
| 文章编号： | 1000-3428（2006）17-0213-03 |
| 收稿时间： | 02 20 2006 12:00AM |
| 修稿时间： | 2006-02-20 |
New Watermark Algorithm Based on Modified Chirp-fourier Transform |
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| ZHU Chunhua,MU Xiaoming,ZHANG Feng.New Watermark Algorithm Based on Modified Chirp-fourier Transform[J].Computer Engineering,2006,32(17):213-215. |
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| Authors: | ZHU Chunhua MU Xiaoming ZHANG Feng |
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| Affiliation: | 1.School of Information Science and Engineering, Industry University of Henan, Zhengzhou 450000; 2. School of Information Engineering, Zhengzhou University, Zhengzhou 450000 |
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| Abstract: | This paper proposes a new watermarking algorithm based on modified chirp-fourier transform. In this technique, chirp typed watermark is embedded in the spatial domain directly, and detected by modified Chirp-fourier transform. The experimental results show that this technique can make the watermarking perceptual invisibility and be detected quickly, and it is also robustness to some common image processing. |
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| Keywords: | Digital watermark Chirp signal Chirp-fourier transform |
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