Multiple-image encryption using spectral cropping and spatial multiplexing

被引：24

作者：

Deng, Pingke ^{[1
,2
]}

Dian, Ming ^{[1
]}

Shan, Mingguang ^{[1
]}

Zhong, Zhi ^{[1
]}

Zhang, Yabin ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Informat & Commun Engn, Harbin 150001, Heilongjiang, Peoples R China

[2] Chinese Acad Sci, Acad Optoelect, Beijing 100094, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2016年 / 359卷

基金：

中国国家自然科学基金;

关键词：

Multiple-image encryption; Discrete multiple-parameter fractional; Fourier transform; Spectral cropping; Space multiplexing; FRACTIONAL FOURIER-TRANSFORM; COMPRESSION; SECURITY;

D O I：

10.1016/j.optcom.2015.09.056

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A multiple-image encryption scheme is proposed using spectral cropping and space multiplexing based on discrete multiple-parameter fractional Fourier transform (DMPFRFT). Spectrum of each original image is firstly cropped by a low-pass filter, and the image is then recovered with the same size of the filter. The recovered images are spatially shifted and multiplexed into a complex signal with the same size of original image. The complex signal is multiplied by a pixel scrambling operation and random phase mask, and then encrypted into one image by DMPFRFT. The multiplexing images can be retrieved with correct keys, and the original images can be then obtained by enlarging the demultiplexing images. Numerical simulations have been done to demonstrate the validity and the security of the proposed method. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：234 / 239

页数：6

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