Abstract
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.
| Original language | English |
|---|---|
| Article number | 3199 |
| Journal | Sensors (Switzerland) |
| Volume | 19 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2 Jul 2019 |
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Converting a common low-cost document scanner into a multispectral scanner. / Khan, Zohaib; Shafait, Faisal; Mian, Ajmal.
In: Sensors (Switzerland), Vol. 19, No. 14, 3199, 02.07.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Converting a common low-cost document scanner into a multispectral scanner
AU - Khan, Zohaib
AU - Shafait, Faisal
AU - Mian, Ajmal
PY - 2019/7/2
Y1 - 2019/7/2
N2 - 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.
AB - 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.
KW - Document scanning
KW - Multispectral imaging
KW - Portable sensor
UR - http://www.scopus.com/inward/record.url?scp=85070477756&partnerID=8YFLogxK
U2 - 10.3390/s19143199
DO - 10.3390/s19143199
M3 - Article
VL - 19
JO - Sensors (Switzerland)
JF - Sensors (Switzerland)
SN - 1424-8220
IS - 14
M1 - 3199
ER -