| 图像在Chirp-Fourier域的能量分布与Chirp水印算法研究 |
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| 引用本文： | 朱春华,杨铁军,穆晓敏,张峰.图像在Chirp-Fourier域的能量分布与Chirp水印算法研究[J].电讯技术,2006,46(4):79-83. |
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| 作者姓名： | 朱春华 杨铁军 穆晓敏 张峰 |
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| 作者单位： | 河南工业大学,信息科学与工程学院,郑州,450052;郑州大学,信息工程学院,郑州,450052 |
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| 摘 要： | 分析了图像在Chirp-Fourier域的能量分布，给出空域Chirp水印嵌入参数选取与Chirp-Fourier域水印检测时的处理方法。仿真结果表明，按照给出的参数嵌入水印，水印算法的透明性好，检测快，对常见的图像处理鲁棒性较强。
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| 关 键 词： | 图像处理 数字水印 Chirp信号 Chirp-Fourier变换 |
| 文章编号： | 1001-893X（2006）04-0079-05 |
| 收稿时间： | 2005-10-31 |
| 修稿时间： | 2005-10-312006-04-06 |
Energy Distribution of Image in Chirp-Fourier Domain and a Chirp Watermarking Algorithm |
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| ZHU Chun-hu,YANG Tie-jun,MU Xiao-min,ZHANG Feng.Energy Distribution of Image in Chirp-Fourier Domain and a Chirp Watermarking Algorithm[J].Telecommunication Engineering,2006,46(4):79-83. |
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| Authors: | ZHU Chun-hu YANG Tie-jun MU Xiao-min ZHANG Feng |
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| Affiliation: | 1. Information Sicence and Engineering School, Industy University of Henan, Zhengzhou 450052, China; 2. Information Engineering School, Zhengzhou University, Zhengzhou 450052, China |
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| Abstract: | The energy distribution of image in Chirp - Fourier domain is analysed and the method of watermark parameter choosing and detecting based on Chirp - Fourier transform is presented. The experimental results show that the proposed watermarking algorithm can make the watermark perceptual invisibility and be detected quickly, and it is also robust to some common image processing. |
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| Keywords: | image processing watermarking chirp signal chirp - Fourier transform |
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