Optical encryption of unlimited-size images based on ptychographic scanning digital holography

被引：26

作者：

Gao, Qiankun ^{[1
]}

Wang, Yali ^{[1
]}

Li, Tuo ^{[1
]}

Shi, Yishi ^{[1
,2
]}

机构：

[1] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Inst Informat Engn, State Key Lab Informat Secur, Beijing 100093, Peoples R China

来源：

APPLIED OPTICS | 2014年 / 53卷 / 21期

基金：

中国国家自然科学基金;

关键词：

PHASE-SHIFTING INTERFEROMETRY; FRACTIONAL FOURIER-DOMAIN; HIGH-RESOLUTION; WIDE-FIELD; INFORMATION; INTERFERENCE; ILLUMINATION; MICROSCOPY; TRANSFORMS; OBJECT;

D O I：

10.1364/AO.53.004700

中图分类号：

O43 [光学];

学科分类号：

070207 [光学];

摘要：

The ptychographic scanning operation is introduced into digital holography to expand the field-of-view (FOV). An optical image encryption method based on this technique is further proposed and analyzed. The plaintext is moved sequentially in the way of ptychographic scanning and corresponding pairs of phase-shifted interferograms are recorded as ciphertexts. Then the holographic processing and the ptychographic iterative reconstruction are both employed to retrieve the plaintext. Numerical experiments demonstrate that the proposed system possesses high security level and wide FOV. The proposed method might also be used for other potential applications, such as three-dimensional information encryption and image hiding. (C) 2014 Optical Society of America

引用

页码：4700 / 4707

页数：8

共 37 条

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