SoI-Phase J:
Authentication methods for security prints

Project Duration: 1.7.2007 to 31.12.2016 (Finished)
Area of Research: Industrial Signal Processing : Classification
Project Manager: Prof. Dr.-Ing. Volker Lohweg


The Sound-of-Intaglio (Sol) concept is a framework for the recognition of Intaglio structures and other printing procedures based on image processing algorithms and filed for patent and which, similar to a “record”, detects intrinsic information to distinguish genuine banknotes from new and worn-out counterfeit banknotes. The unique character of the process is attributable to the fact that no specific security features are applied but exclusively special printing procedures. Therefore, an adaption of the banknotes to the procedure is not required. Different resource-efficient implementations allow the use of hardware-oriented (FPGA) applications as well as of software-oriented. In particular, the project partners demonstrated in 2012 that also customary smartphones may be used as platform (cf. links). These were worldwide presented to almost all nations on the occasion of an international banknote security conference and the Banknote Horizons 2012. The project was already presented to the European Central Bank (ECB), the US Federal Reserve System (FED) and the Central Bank Counterfeit Deterrence Group (CBCDG) of the G20 states. The procedure significantly supports the authentication of banknotes and is currently evaluated in different scenarios with additional partners such as ATM suppliers.

Within the scope of a bilateral mission related research in the field of Industrial Signal Processing (ISP) new procedures for the authentification of banknotes are to be researched. However, as more and more print techniques and new security features will be established, total quality security, authenticity and bank note printing must be assured. "In a close partnership with KBA-NotaSys S.A., new pattern recognition concepts for the banknote authentification will be researched", commented Prof. Dr. Volker Lohweg.

KBA-NotaSys S.A. is a global supplier of security printing systems serving the banknote industry. The core business ranges from banknote design and pre-press activity to design and supply of production machines, systems and process control tools as well as optical Banknote inspection and quality control. 

Project phases:

  • Sound-of-Intaglio (SoI-I) - Phase A (01.07.2007-31.12.2009)
  • Sound-of-Intaglio (SoI-II) - Phase B (01.01.2010-31.12.2012)
  • Sound-of-Intaglio (SoI-III) - Phase C (01.01.2013-31.12.2014)
  • Sound-of-Intaglio (SoI-IV) - Phase D (01.01.2015-31.12.2015)
  • Sound-of-Intaglio (SoI-V) - Phase E (01.01.2016-31.12.2016)
  • von 2017 bis 2019 Projektleitung und Ansprechpartner: Dr. rer. nat. Helene Dörksen
  • Sound-of-Intaglio (SoI-VI) - Phase F (01.01.2017-31.12.2017)
  • Sound-of-Intaglio (SoI-VII) - Phase G (01.01.2018-31.12.2018)
  • Sound-of-Intaglio (SoI-VIII) - Phase H (01.01.2019-31.12.2019)
  • Sound-of-Intaglio (SoI-VIIII) - Phase I (01.01.2020-31.12.2020)
  • Sound-of-Intaglio (SoI-X) - Phase J (01.01.2021-31.12.2021)


Press and television articles:


Principle: Banknote authentikation with smartphone (Copyright WG Discrete Systems)WDR TV report on Banknote authentication on 6th October 2010 WDR TV report on Banknote authentication on 7th March 2012 MDR TV report on Banknote authentication on 30th October 2012

Banknote Security - Wincor World 2012

Banknote Authentication

One step ahead of counterfeiters

Making life complicated for counterfeiters

Press Release


KBA-NotaSys S.A., Lausanne

Image: Authentication methods for security prints


Dyck, Walter; Türke, Thomas; Schaede, Johannes; Lohweg, Volker: A New Concept on Quality Inspection and Machine Conditioning for Security Prints. In: Optical Document Security - The 2008 Conference on Optical Security and Counterfeit Deterrence; Reconnaissance International Publishers and Consultants, San Francisco, CA, USA, Jan 2008 Jan 2008 (More)

Lohweg, Volker; Li, Rui; Türke, Thomas; Willeke, Harald; Schaede, Johannes: FPGA-based Multi-sensor Real Time Machine Vision for Banknote Printing. In: 21st annual Symposium on IS&T/SPIE Electronic Imaging, 18 -22 January 2009, San Jose, California USA. Accepted for publication, Jan 2009 (More)

Glock, Stefan; Gillich, Eugen; Schaede, Johannes; Lohweg, Volker: Feature Extraction Algorithm for Banknote Textures based on Incomplete Shift Invariant Wavelet Packet Transform. S.: 422-431, The 31st annual pattern recognition symposium of the German Association for Pattern Recognition DAGM (Deutsche Arbeitsgemeinschaft für Mustererkennung DAGM e.V.) September 9-11, 2009, accepted for publication, Jun 2009 (More)

Lohweg, Volker; Gillich, Eugen; Schaede, Johannes: New Concepts in Banknote Authentication. In: inIT & KBA-Giori International Workshop on "Detection of Banknote Forgeries", Blomberg, 10-12 August 2009 Aug 2009 (More)

Lohweg, Volker; Schaede, Johannes: Document Production and Verification by Optimization of Feature Platform Exploitation. In: Optical Document Security - The Conference on Optical Security and Counterfeit Detection, San Francisco, CA, USA, January 20-22, 2010 Jan 2010 (More)

Lohweg, Volker; Gillich, Eugen; Glock, Stefan; Mönks, Uwe; Schaede, Johannes: Intaglio Based Banknote Authentication. In: 2. inIT & KBA-Giori International Workshop on "Detection of Banknote Forgeries" Orell Füssli, Zürich, 22-24 March 2010, Mar 2010 (More)

Lohweg, Volker: Renaissance of Intaglio. In: Keesing Journal of Documents & Identity S.: 35-41, Keesing Reference Systems Publ., Vol. 33, Oct 2010 (More)

Gillich, Eugen; Lohweg, Volker: Banknotenauthentifizierung. In: 1. Jahresolloquium "Bildverarbeitung in der Automation" Centrum Industrial IT, Lemgo, Nov 2010 (More)

Lohweg, Volker: Banknotenauthentifikation - Ohne Bildverarbeitung geht es nicht! In: Museumsrunde - IHK Lippe zu Detmold Detmold, May 2011 (More)

Lohweg, Volker; Dörksen, Helene; Gillich, Eugen; Hildebrand, Roland; Hoffmann, Jan Leif; Schaede, Johannes: Mobile Devices for Banknote Authentication – is it possible? In: Optical Document Security - The Conference on Optical Security and Counterfeit Detection III, San Francisco, CA, USA, January 18-20, 2012. Jan 2012 (More)

Lohweg, Volker: Authentifikation von Banknoten - Müssen Banknoten intelligent werden?, 5. Executive Technology Meeting, Wincor World 2012, Vortrag, 18.10.2012, A2 Forum, Rheda-Wiedenbrück. Oct 2012 (More)

Lohweg, Volker; Dörksen, Helene; Hoffmann, Jan Leif; Hildebrand, Roland; Gillich, Eugen; Schaede, Johannes; Hofmann, Jürg: Banknote authentication with mobile devices. In: Media Watermarking, Security, and Forensics 2013 (03-07.02.2013) IS&T/SPIE Electronic Imaging 2013, San Francisco, USA, Feb 2013 (More)

Hofmann, Jürg; Gillich, Eugen; Dörksen, Helene; Chassot, Daniel; Schaede, Johannes; Türke, Thomas; Lohweg, Volker: New Strategies in Image Processing for Standardized Intaglio Quality Analysis in the Printing Process. In: Optical Document Security - The Conference on Optical Security and Counterfeit Detection IV, San Francisco, CA, USA Jan 2014 (More)

Gillich, Eugen; Dörksen, Helene; Lohweg, Volker: Generation of robust optical paths – Color Processing for Mobile Devices.. In: Optical Document Security - The Conference on Optical Security and Counterfeit Detection IV, San Francisco, CA, USA Jan 2014 (More)

Henning, Kai-Fabian; Lohweg, Volker: Occlusion Detection for Textured 2D-Objects on a Heap. In: BVAu 2014 - Bildverarbeitung für die Automation S.: 1-8, inIT - Lemgoer Schriftenreihe, Lemgo, Germany, Nov 2014 (More)

Gillich, Eugen; Dörksen, Helene; Lohweg, Volker: Advanced Color Processing for Mobile Devices. In: IS&T/SPIE Electronic Imaging 2015, Image Processing: Machine Vision Applications VIII S.: 1-12, SPIE, San Francisco, CA, USA, Feb 2015 (More)

Henning, Kai-Fabian; Fritze, Alexander; Gillich, Eugen; Mönks, Uwe; Lohweg, Volker: Stable Image Acquisition for Mobile Image Processing Applications. In: IS&T/SPIE Electronic Imaging 2015, Digital Photography and Mobile Imaging XI S.: 1-12, SPIE, San Francisco, CA, USA, Feb 2015 (More)


Uwe Mönks (Diploma)
Informationstheoretische Untersuchungen an printmedien mit Hilfe verschiedener Wavelets (Details)

Eugen Gillich (Diploma)
Untersuchungen an Printmedien mit Wavelet-Transformationen (Details)

Stefan Glock (Bachelor)
Implementierung redundanter Wavelet-Packet-Trees (Details)

Alexander Rill (Diploma)
Echtzeitbildverarbeitung mit Wavelet-Transformation und CMOS_Kamera (Details)

Stefan Glock (Project)
Strategie für redundante Wavelet-Packet-Trees (Details)

Eugen Gillich (Master)
Authentifizierungsmethoden für Banknoten (Details)

Andreas Isaak (Bachelor)
Umsetzung einer Echtzeitbildverarbeitungskette auf einen FPGA-Development-Board (Details)

Martin Leschke (Bachelor)
Entwurf und Implementierung eines FPGA-Development-Board mit integrierter CMOS-Kamera (Details)

Sebastian Lindemeier (Project)
Erkennung von Bildrauschen zur Anwendung in Authentifikationmethoden für Sicherheitsdrucke (Details)

Sebastian Lindemeier (Bachelor)
Entwicklung von Bildverarbeitungsmethoden zur Strukturanalyse von Sicherheitsdrucken (Details)

Alexander Fritze (Project)
Analyse und Leistungsbewertung der Bildverarbeitungsmethoden zur Lokalisierung von Objekten auf ressourcenbeschränkter Hardware (Details)

Alexander Fritze (Bachelor)
Entwicklung von Algorithmen zur relativen Positionserkennung eines Smartphones zur Banknote mit Hilfe von Bildbearbeitungsmethoden (Details)

Contact Person: Prof. Dr.-Ing. Volker Lohweg , M.Sc. Eugen Gillich
Research Assistant: M.Sc. Eugen Gillich , Dipl.-Ing. Roland Hildebrand , Dipl.-Inform. Jan Leif Hoffmann , Prof. Dr. rer. nat. Helene Dörksen , B.Sc. Mark Funk