| 分数阶Fourier变换在数字水印中的应用 |
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| 引用本文： | 孙克辉,程巍,陈艳山.分数阶Fourier变换在数字水印中的应用[J].计算机工程与应用,2010,46(11):119-121. |
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| 作者姓名： | 孙克辉 程巍 陈艳山 |
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| 作者单位： | 中南大学物理科学与技术学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金No.60672041~~ |
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| 摘 要： | 基于混沌置乱以及离散分数阶Fourier变换，提出一种数字水印算法，该算法在分数阶傅里叶域嵌入水印，并用相关性检测的方法来提取水印。混沌序列的伪随机性和初值敏感性以及分数阶Fourier变换的变换阶数为数字水印的安全性提供了保证，通过对算法的仿真以及抗攻击性能测试，该数字水印有较好的不可感知性，算法对JPEG压缩、滤波、噪声等攻击具有良好的鲁棒性。
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| 关 键 词： | 数字水印 分数阶Fourier变换 混沌置乱 |
| 收稿时间： | 2008-10-8 |
| 修稿时间： | 2008-12-22
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Application of fractional_order Fourier transform in watermarking |
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| SUN Ke-hui,CHENG Wei,CHEN Yan-shanSchool of Physics Science , Technology,Central South University,Changsha ,China.Application of fractional_order Fourier transform in watermarking[J].Computer Engineering and Applications,2010,46(11):119-121. |
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| Authors: | SUN Ke-hui CHENG Wei CHEN Yan-shanSchool of Physics Science Technology Central South University Changsha China |
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| Affiliation: | SUN Ke-hui,CHENG Wei,CHEN Yan-shanSchool of Physics Science , Technology,Central South University,Changsha 410083,China |
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| Abstract: | A digital watermarking algorithm is proposed based on chaotic scrambling and discrete fractional_order Fourier transform.In this algorithm,watermarks are embedded in the fractional Fourier domain,and it is extracted by correlation detection method.Pseudo-random,sensitive to initial value of chaotic sequences,and the fractional Fourier transform improve the security of the digital watermark.By simulations and tests of anti-attack performance,the invisibility of the watermark is very good,and this algorithm i... |
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| Keywords: | digital watermark fractional_order Fourier transform chaotic scrambling |
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