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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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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. |
format | Online Article Text |
id | pubmed-6679315 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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