Open AccessExperimental study on optical image encryption with asymmetric double random phase and computer-generated hologram
Author(s) -
Sixing Xi,
Xiaolei Wang,
Lipei Song,
Zhuqing Zhu,
Bowen Zhu,
Shaobin Huang,
Ning Yu,
Huaying Wang
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.008212
Subject(s) - encryption , spatial light modulator , holography , digital holography , computer science , optics , computer generated holography , phase (matter) , image (mathematics) , moiré pattern , physics , computer vision , computer network , quantum mechanics
Optical image encryption, especially double-random-phase-based, is of great interest in information security. In this work, we experimentally demonstrate the security and feasibility of optical image encryption with asymmetric double random phase and computer-generated hologram (CGH) by using spatial light modulator. First of all, the encrypted image modulated by asymmetric double random phase is numerically encoded into real-value CGH. Then, the encoded real-value CGH is loaded on the spatial light modulator and optically decrypted in self-designed experimental system. Experimental decryption results are in agreement with numerical calculations under the prober/mistaken phase keys condition. This optical decryption technology opens a window of optical encryption practical application and shows great potential for digital multimedia product copyright protection and holographic false trademark.