Optical color-image encryption and synthesis using coherent diffractive imaging in the Fresnel domain

被引：82

作者：

Chen, Wen ^{[1
]}

Chen, Xudong ^{[1
]}

Sheppard, Colin J. R. ^{[2
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[2] Natl Univ Singapore, Dept Bioengn, Singapore 117574, Singapore

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 04期

关键词：

PHASE-SHIFTING INTERFEROMETRY; FRACTIONAL FOURIER DOMAIN; DIGITAL HOLOGRAPHY; INFORMATION SECURITY; GYRATOR TRANSFORM; ARNOLD TRANSFORM; VIRTUAL OPTICS; RETRIEVAL; WAVELENGTH; ALGORITHM;

D O I：

10.1364/OE.20.003853

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a new method using coherent diffractive imaging for optical color-image encryption and synthesis in the Fresnel domain. An optical multiple-random-phase-mask encryption system is applied, and a strategy based on lateral translations of a phase-only mask is employed during image encryption. For the decryption, an iterative phase retrieval algorithm is applied to extract high-quality decrypted color images from diffraction intensity maps (i.e., ciphertexts). In addition, optical color-image synthesis is also investigated based on coherent diffractive imaging. Numerical results are presented to demonstrate feasibility and effectiveness of the proposed method. Compared with conventional interference methods, coherent diffractive imaging approach may open up a new research perspective or can provide an effective alternative for optical color-image encryption and synthesis. (C) 2012 Optical Society of America

引用

页码：3853 / 3865

页数：13

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