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基于全息技术的光学加密系统实值编码

Real-value Encryption for Optical Security System Based on Holography

李萍   李榕  
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摘要

提出一种基于全息技术用于光学图像加密的实值编码方法.待编码的数字图像与一个大小相同、灰度值为零的图像组成一幅新的图像,然后与一个随机相位掩膜一起通过光学透镜作傅里叶变换,取变换结果的实部作为编码输出图像.利用全息记录的方法解码,即编码输出图像和随机相位掩膜的傅里叶变换相加通过光学透镜作傅里叶反变换,记录反变换的光强分布,再通过非线性变换或灰度变换的方法可以恢复原图像.

Abstract

作者简介:李榕,Tel:020-85214399 Email:lirong@scnu.edu.cn

Newport宣传-MKS新实验室计划
补充资料

中图分类号:TN911

所属栏目:全息与光信息处理

基金项目:广东省教育厅自然科学基金(Z02020)资助

收稿日期:2006-10-20

修改稿日期:--

网络出版日期:0001-01-01

作者单位    点击查看

李萍:华南师范大学,物理与电信工程学院,广州,510006
李榕:华南师范大学,物理与电信工程学院,广州,510006

备注:李萍,received the M.S.degree from Xi′an Jiaotong University in 1990.She is now an associate professor in the School of Physics and Communications Engineering,South China Normal University.Her research interests include optical information processing,signal and image processing.

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引用该论文

李萍,李榕. Real-value Encryption for Optical Security System Based on Holography[J]. ACTA PHOTONICA SINICA, 2008, 37(5): 957-959

李萍,李榕. 基于全息技术的光学加密系统实值编码[J]. 光子学报, 2008, 37(5): 957-959

被引情况

【1】吕善翔,王兆山,盛堰,冯久超. 一种保持非负整数值的图像加密算法. 光子学报, 2012, 41(11): 1365-1371

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