Image encryption scheme based on computer generated holography and time-averaged moiré

P. Palevičius, M. Ragulskis, G. Janusas, A. Palevičius
{"title":"Image encryption scheme based on computer generated holography and time-averaged moiré","authors":"P. Palevičius, M. Ragulskis, G. Janusas, A. Palevičius","doi":"10.1117/12.2272126","DOIUrl":null,"url":null,"abstract":"A technique of computational image encryption and optical decryption based on computer generated holography and time-averaged moir´e is investigated in this paper. Dynamic visual cryptography (a visual cryptography scheme based on time-averaging geometric moir´e), Gerchberg–Saxton algorithm and 3D microstructure manufacturing techniques are used to construct the optical scheme. The secret is embedded into a cover image by using a stochastic moir´e grating and can be visually decoded by a naked eye. The secret is revealed if the amplitude of harmonic oscillations in the Fourier plane corresponds to an accurately preselected value. The process of the production of 3D microstructure is described in details. Computer generated holography is used in the design step and electron beam lithography is exploited for physical 3D patterning. The phase data of a complex 3D microstructure is obtained by Gerchberg-Saxton algorithm and is used to produce a computer generated hologram. Physical implementation of microstructure is performed by using a single layer polymethyl methacrylate as a basis for 3D microstructure. Numerical simulations demonstrate efficient applicability of this technique.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applications of Optics and Photonics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.2272126","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1

Abstract

A technique of computational image encryption and optical decryption based on computer generated holography and time-averaged moir´e is investigated in this paper. Dynamic visual cryptography (a visual cryptography scheme based on time-averaging geometric moir´e), Gerchberg–Saxton algorithm and 3D microstructure manufacturing techniques are used to construct the optical scheme. The secret is embedded into a cover image by using a stochastic moir´e grating and can be visually decoded by a naked eye. The secret is revealed if the amplitude of harmonic oscillations in the Fourier plane corresponds to an accurately preselected value. The process of the production of 3D microstructure is described in details. Computer generated holography is used in the design step and electron beam lithography is exploited for physical 3D patterning. The phase data of a complex 3D microstructure is obtained by Gerchberg-Saxton algorithm and is used to produce a computer generated hologram. Physical implementation of microstructure is performed by using a single layer polymethyl methacrylate as a basis for 3D microstructure. Numerical simulations demonstrate efficient applicability of this technique.
基于计算机生成全息和时间平均图像的图像加密方案
本文研究了一种基于计算机生成全息和时间平均莫尔方程的计算图像加密和光学解密技术。采用动态视觉密码(一种基于时间平均几何莫尔e的视觉密码方案)、Gerchberg-Saxton算法和三维微结构制造技术构建光学方案。这个秘密通过使用随机莫尔光栅嵌入到封面图像中,可以用肉眼进行视觉解码。如果傅里叶平面上谐波振荡的振幅对应于一个精确的预选值,秘密就会揭示出来。详细介绍了三维微结构的制作过程。在设计步骤中使用计算机生成全息图,并利用电子束光刻技术进行物理三维图形。采用Gerchberg-Saxton算法获得复杂三维微观结构的相位数据,并用于生成计算机生成的全息图。微观结构的物理实现是通过使用单层聚甲基丙烯酸甲酯作为三维微观结构的基础来实现的。数值模拟结果表明了该方法的有效性和适用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信