Optical image encryption based on phase retrieval combined with three-dimensional particle-like distribution
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Abstract
We propose a new phase retrieval algorithm for optical image encryption in three-dimensional (3D) space. The two-dimensional (2D) plaintext is considered as a series of particles distributed in 3D space, and an iterative phase retrieval algorithm is developed to encrypt the series of particles into phase-only masks. The feasibility and effectiveness of the proposed method are demonstrated by a numerical experiment, and the advantages and security of the proposed optical cryptosystems are also analyzed and discussed. © 2012 IOP Publishing Ltd.
Keywords
optical decryption, optical image encryption, particle-like distribution, phase retrieval, three-dimensional processing
Source Title
Journal of Optics (United Kingdom)
Publisher
Series/Report No.
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Date
2012-07
DOI
10.1088/2040-8978/14/7/075402
Type
Article