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Converting a Common Low-Cost Document Scanner into a Multispectral Scanner

Forged documents and counterfeit currency can be better detected with multispectral imaging in multiple color channels instead of the usual red, green and blue. However, multispectral cameras/scanners are expensive. We propose the construction of a low cost scanner designed to capture multispectral...

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Detalles Bibliográficos
Autores principales: Khan, Zohaib, Shafait, Faisal, Mian, Ajmal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6679315/
https://www.ncbi.nlm.nih.gov/pubmed/31330773
http://dx.doi.org/10.3390/s19143199
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author Khan, Zohaib
Shafait, Faisal
Mian, Ajmal
author_facet Khan, Zohaib
Shafait, Faisal
Mian, Ajmal
author_sort Khan, Zohaib
collection PubMed
description Forged documents and counterfeit currency can be better detected with multispectral imaging in multiple color channels instead of the usual red, green and blue. However, multispectral cameras/scanners are expensive. We propose the construction of a low cost scanner designed to capture multispectral images of documents. A standard sheet-feed scanner was modified by disconnecting its internal light source and connecting an external multispectral light source comprising of narrow band light emitting diodes (LED). A document was scanned by illuminating the scanner light guide successively with different LEDs and capturing a scan of the document. The system costs less than a hundred dollars and is portable. It can potentially be used for applications in verification of questioned documents, checks, receipts and bank notes.
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spelling pubmed-66793152019-08-19 Converting a Common Low-Cost Document Scanner into a Multispectral Scanner Khan, Zohaib Shafait, Faisal Mian, Ajmal Sensors (Basel) Communication Forged documents and counterfeit currency can be better detected with multispectral imaging in multiple color channels instead of the usual red, green and blue. However, multispectral cameras/scanners are expensive. We propose the construction of a low cost scanner designed to capture multispectral images of documents. A standard sheet-feed scanner was modified by disconnecting its internal light source and connecting an external multispectral light source comprising of narrow band light emitting diodes (LED). A document was scanned by illuminating the scanner light guide successively with different LEDs and capturing a scan of the document. The system costs less than a hundred dollars and is portable. It can potentially be used for applications in verification of questioned documents, checks, receipts and bank notes. MDPI 2019-07-20 /pmc/articles/PMC6679315/ /pubmed/31330773 http://dx.doi.org/10.3390/s19143199 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Khan, Zohaib
Shafait, Faisal
Mian, Ajmal
Converting a Common Low-Cost Document Scanner into a Multispectral Scanner
title Converting a Common Low-Cost Document Scanner into a Multispectral Scanner
title_full Converting a Common Low-Cost Document Scanner into a Multispectral Scanner
title_fullStr Converting a Common Low-Cost Document Scanner into a Multispectral Scanner
title_full_unstemmed Converting a Common Low-Cost Document Scanner into a Multispectral Scanner
title_short Converting a Common Low-Cost Document Scanner into a Multispectral Scanner
title_sort converting a common low-cost document scanner into a multispectral scanner
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6679315/
https://www.ncbi.nlm.nih.gov/pubmed/31330773
http://dx.doi.org/10.3390/s19143199
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