Optical image encryption with multistage and multichannel fractional Fourier-domain filtering

被引：194

作者：

Liu, ST ^{[1
]}

Mi, QL ^{[1
]}

Zhu, BH ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

来源：

OPTICS LETTERS | 2001年 / 26卷 / 16期

关键词：

Acoustic noise - Algorithms - Computer simulation - Cryptography - Fourier transforms - Information analysis - Iterative methods - Optical filters - Security of data;

D O I：

10.1364/OL.26.001242

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel image-encryption algorithm that employs multichannel and multistage fractional Fourier-domain filtering architecture. We perform the encryption and decryption by randomly filtering the spatial frequency of the image and then recombining the information from the algorithm in a multistage fractional Fourier domain with pure random-intensity-encoded masks and their complements in a multichannel scheme. The algorithm can be implemented iteratively in an electro-optical setup. Numerical simulations have verified the validity of the algorithm. (C) 2001 Optical Society of America.

引用

页码：1242 / 1244

页数：3

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