Image encryption and the fractional Fourier transform

被引：137

作者：

Hennelly, BM ^{[1
]}

Sheridan, JT ^{[1
]}

机构：

[1] Natl Univ Ireland Univ Coll Dublin, Fac Architecture & Engn, Dept Elect & Elect Engn, Dublin 4, Ireland

来源：

OPTIK | 2003年 / 114卷 / 06期

关键词：

fractional Fourier transform; optical image encryption; random phase mask; optical security;

D O I：

10.1078/0030-4026-00257

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A number of method have been recently proposed in the literature for the encryption of 2-D information using optical systems based on the fractional Fourier fransform, FRT. In this paper a brief review of the methods proposed to date is presented. A measure of the strength/ro-business of the level of encryption of the various techniques is proposed and a comparison is carried out between the methods. Optical implementations are discussed. Robustness of system with respect to misalignment and blind decryption are also discussed.

引用

页码：251 / 265

页数：15

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