Virtually optical information verification with a hierarchical structure

Wen Chen

doi:10.1117/1.OE.57.1.010502

19 January 2018 Virtually optical information verification with a hierarchical structure

Wen Chen

Author Affiliations +

Funded by: Natural Science Foundation of China, Hong Kong Research Grants Council Early Career Scheme, Shenzhen Science and Technology Innovation Commission, Hong Kong Polytechnic University

Optical Engineering, Vol. 57, Issue 1, 010502 (January 2018). https://doi.org/10.1117/1.OE.57.1.010502

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.

Citation Download Citation

Wen Chen "Virtually optical information verification with a hierarchical structure," Optical Engineering 57(1), 010502 (19 January 2018). https://doi.org/10.1117/1.OE.57.1.010502

Received: 17 September 2017; Accepted: 28 December 2017; Published: 19 January 2018

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