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Proceedings Paper

Banknote authentication with mobile devices
Author(s): Volker Lohweg; Jan Leif Hoffmann; Helene Dörksen; Roland Hildebrand; Eugen Gillich; Jürg Hofmann; Johannes Schaede
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Paper Abstract

Maintaining confidence in security documents, especially banknotes, is and remains a major concern for the central banks in order to maintain the stability of the economy around the world. In this paper we describe an image processing and pattern recognition approach which is based on the Sound-of-Intaglio principle for the usage in smart devices such as smartphones. Today, in many world regions smartphones are in use. These devices become more and more computing units, equipped with resource-limited, but effective CPUs, cameras with illumination, and flexible operating systems. Hence, it is obvious to apply smartphones for banknote authentication, especially for visually impaired persons. Our approach shows that those devices are capable of processing data under the constraints of image quality and processing power. Strictly a mobile device as such is not an industrial product for harsh environments, but it is possible to use mobile devices for banknote authentication. The concept is based on a new strategy for constructing adaptive Wavelets for the analysis of different print patterns on a banknote. Furthermore, a banknote specific feature vector is generated which describes an authentic banknote effectively under various illumination conditions. A multi-stage Lineardiscriminant- analysis classifier generates stable and reliable output.

Paper Details

Date Published: 22 March 2013
PDF: 14 pages
Proc. SPIE 8665, Media Watermarking, Security, and Forensics 2013, 866507 (22 March 2013); doi: 10.1117/12.2001444
Show Author Affiliations
Volker Lohweg, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Jan Leif Hoffmann, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Helene Dörksen, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Roland Hildebrand, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Eugen Gillich, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Jürg Hofmann, KBA-NotaSys S.A. (Switzerland)
Johannes Schaede, KBA-NotaSys S.A. (Switzerland)

Published in SPIE Proceedings Vol. 8665:
Media Watermarking, Security, and Forensics 2013
Adnan M. Alattar; Nasir D. Memon; Chad D. Heitzenrater, Editor(s)

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