Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/77442
Title: Virtually optical information verification with a hierarchical structure
Authors: Chen, W 
Keywords: Hierarchical structure
Optical information verification
Phase retrieval
Issue Date: 2018
Publisher: SPIE-International Society for Optical Engineering
Source: Optical engineering, 2018, v. 57, no. 1, 10502 How to cite?
Journal: Optical engineering 
Abstract: A virtually optical system with a hierarchical structure is designed for optical verification. At each hierarchical level, two phase-only masks are alternately generated using an iterative approach and then are sparsified. All sparse phase-only masks generated at the lower hierarchical levels are fixed and applied as constraints at the higher hierarchical level. Since sparse phase-only masks are applied for the decoding, the recovered images are invisible and instead can be further verified by a nonlinear correlation algorithm. The results are presented to show validity of the proposed method, and the proposed method provides a promising strategy for optical verification.
URI: http://hdl.handle.net/10397/77442
ISSN: 0091-3286
EISSN: 1560-2303
DOI: 10.1117/1.OE.57.1.010502
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