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
收藏
页码：251 / 265
页数：15
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