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Optical Engineering

Virtually optical information verification with a hierarchical structure
Author(s): Wen Chen
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Paper 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.

Paper Details

Date Published: 19 January 2018
PDF: 4 pages
Opt. Eng. 57(1) 010502 doi: 10.1117/1.OE.57.1.010502
Published in: Optical Engineering Volume 57, Issue 1
Show Author Affiliations
Wen Chen, The Hong Kong Polytechnic Univ. (China)


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