Open AccessOptical color-image encryption and synthesis using coherent diffractive imaging in the Fresnel domain
Author(s) -
Wen Chen,
Xudong Chen,
Colin J. R. Sheppard
Publication year - 2012
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.20.003853
Subject(s) - encryption , optics , phase retrieval , computer science , fresnel diffraction , coherent diffraction imaging , image quality , interference (communication) , phase (matter) , diffraction , computer vision , physics , artificial intelligence , image (mathematics) , channel (broadcasting) , fourier transform , telecommunications , quantum mechanics , operating system
We propose a new method using coherent diffractive imaging for optical color-image encryption and synthesis in the Fresnel domain. An optical multiple-random-phase-mask encryption system is applied, and a strategy based on lateral translations of a phase-only mask is employed during image encryption. For the decryption, an iterative phase retrieval algorithm is applied to extract high-quality decrypted color images from diffraction intensity maps (i.e., ciphertexts). In addition, optical color-image synthesis is also investigated based on coherent diffractive imaging. Numerical results are presented to demonstrate feasibility and effectiveness of the proposed method. Compared with conventional interference methods, coherent diffractive imaging approach may open up a new research perspective or can provide an effective alternative for optical color-image encryption and synthesis.