Optical image encryption based on a radial shearing interferometer

被引：14

作者：

Lu, Dajiang ^{[1
]}

He, Wenqi ^{[1
]}

Peng, Xiang ^{[1
]}

机构：

[1] Shenzhen Univ, Educ Minist China, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China

来源：

JOURNAL OF OPTICS | 2013年 / 15卷 / 10期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

optical information security; optical cryptosystem; radial shearing interference; FRACTIONAL FOURIER DOMAINS; DIGITAL HOLOGRAPHY; INTERFERENCE; TRANSFORM; INFORMATION;

D O I：

10.1088/2040-8978/15/10/105405

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel method for optical image encryption based on a modified radial shearing interferometer (MRSI), which is generally used for wavefront reconstruction. In this method, a plaintext image is first encoded into a phase-only mask (POM) and then modulated by a random phase mask (RPM), the result is regarded as the input of the radial shearing interferometer and is divided into two coherent lights, which interfere with each other, leading to an interferogram (ciphertext). The aforementioned encryption process can be achieved digitally or optically while the decryption process can only be analytically accomplished. Numerical simulation is provided to demonstrate the validity of this method.

引用

页数：6

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