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Proceedings Paper

Optical processing and pattern recognition applied to security and anticounterfeiting
Author(s): Bahram Javidi
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Paper Abstract

We present ideas for security verification of credit cards, passports, and other IDs using optics, pattern recognition, and neural networks. One idea is to permanently and irretrievably bond a phase mask to a primary identification amplitude pattern such as a fingerprint, a picture of a face, or a signature. The complex phase/amplitude patterns cannot be seen and cannot be copied by an intensity sensitive detector such as a CCD camera. Both the phase mask and the primary pattern are separately readable and identifiable in an optical processor or correlator. Tests of the proposed systems will be provided. Subject Terms: Optics, Image Processing, Security, Validation, Recognition, Optical Processing, Phase encoding, Phase masks, spatial filters, Nonlinear Joint Transform Correlators, Optical Correlators

Paper Details

Date Published: 30 August 2017
PDF: 37 pages
Proc. SPIE 10317, Spectrally Selective Surfaces for Heating and Cooling Applications, 1031708 (30 August 2017); doi: 10.1117/12.2284054
Show Author Affiliations
Bahram Javidi, Univ. of Connecticut, Storrs (United States)


Published in SPIE Proceedings Vol. 10317:
Spectrally Selective Surfaces for Heating and Cooling Applications
Claes-Göran Granqvist, Editor(s)

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