| 基于分数傅里叶变换的光学彩色图像加密 |
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| 引用本文： | 李晓翠,杨晓苹,朱亚东.基于分数傅里叶变换的光学彩色图像加密[J].天津理工大学学报,2010,26(2). |
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| 作者姓名： | 李晓翠 杨晓苹 朱亚东 |
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| 作者单位： | 天津理工大学电子信息工程学院,天津,300384 |
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| 基金项目： | 光电信息技术科学教育部重点实验室开放课题，天津市薄膜电子与通信器件重点实验室基金 |
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| 摘 要： | 提出一种基于分数傅里叶变换相位编码并结合三色光栅的方法,实现光学彩色图像的加密.该方法采用三色光栅技术将一幅彩色图像调制为灰度图像,并采用分数傅里叶变换的相位编码进行加密.该方法不仅实验设备简单,成本较低,利于实现,而且可利用分数傅立叶变换的分数阶增加加密的重数,从而提高了安全性.模拟实验结果证明了该方法的有效性.
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| 关 键 词： | 彩色图像加密 三色光栅 分数傅里叶变换 |
Optical color image encryption based on fractional Fourier transform |
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| LI Xiao-cui,YANG Xiao-ping,ZHU Ya-dong.Optical color image encryption based on fractional Fourier transform[J].Journal of Tianjin University of Technology,2010,26(2). |
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| Authors: | LI Xiao-cui YANG Xiao-ping ZHU Ya-dong |
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| Institution: | LI Xiao-cui,YANG Xiao-ping,ZHU Ya-dong(School of Electronic Information Engineering,Tianjin University of Technology,Tianjin 300384,China) |
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| Abstract: | A fractional Fourier transform phase encoding combined with tricolor grating method is proposed for the optical color image encryption system.According to tricolor grating theory,a color image is modulated into a gray scale image,and then the gray scale image is encrypted by fractional Fourier transform phase encoding.With the tricolor grating,the system is simper and more practical.And due to the additional degrees of freedom provided by the fractional Fourier transform,the numbers of security keys can be ... |
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| Keywords: | color image encryption tricolor gating fractional Fourier transform |
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