Journal of the Optical Society of Korea

  • 제14권4호
  • /
  • Pages.316-320
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  • 2010
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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Counterfeit Detection Using Characterization of Safety Feature on Banknote with Full-field Optical Coherence Tomography

  • Choi, Woo-June (School of Information and Communications, Gwangju Institute of Science and Technology (GIST)) ;
  • Min, Gi-Hyeon (School of Information and Communications, Gwangju Institute of Science and Technology (GIST)) ;
  • Lee, Byeong-Ha (School of Information and Communications, Gwangju Institute of Science and Technology (GIST)) ;
  • Eom, Jong-Hyun (Graduate-program of Medical System Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • Kim, Ju-Wan (Graduate-program of Medical System Engineering, Gwangju Institute of Science and Technology (GIST))
  • 투고 : 2010.10.20
  • 심사 : 2010.11.15
  • 발행 : 2010.12.25
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초록

We report an application of full-field optical coherence tomography (FF-OCT) for identifying counterfeit bank notes. The depth-resolved imaging capability of FF-OCT was used for tomographic identification of superficially-identical objects. By retrieving the internal structures of the security feature (cash hologram) of an original banknote, we could demonstrate the feasibility of FF-OCT to identify counterfeit money. The FF-OCT images showed that the hologram consisted of micron scale multi-coated layers including an air gap. Therefore, it is expected that FF-OCT has potential as a new non-invasive tool to discern imitation of currency, and it would find applications in a wide field of counterfeit sciences.

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참고문헌

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