Counterfeit Detection Using Characterization of Safety Feature on Banknote with Full-field Optical Cohornce Tomography

被引：31

作者：

Choi, Woo June ^{[1
]}

Min, Gihyeon ^{[1
]}

Lee, Byeong Ha ^{[1
]}

Eom, Jonghyun ^{[2
]}

Kim, Ju Wan ^{[2
]}

机构：

[1] GIST, Sch Informat & Commun, Kwangju 500712, South Korea

[2] GIST, Grad Program Med Syst Engn, Kwangju 500712, South Korea

来源：

JOURNAL OF THE OPTICAL SOCIETY OF KOREA | 2010年 / 14卷 / 04期

关键词：

Full-field optical coherence tomography; Thermal-light interference microscope; Counterfeit money detection; Cash hologram; Internal structural identification; COHERENCE TOMOGRAPHY; INTERFEROMETRY; MICROSCOPY;

D O I：

10.3807/JOSK.2010.14.4.316

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：316 / 320

页数：5

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