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An algorithm for the evolutionary-fuzzy generation of on-line signature hybrid descriptors

Zalasiński Marcin, Cpałka Krzysztof, Laskowski Łukasz, Wunsch II Donald C., Przybyszewski Krzysztof

Journal of Artificial Intelligence and Soft Computing Research

2020

Vol. 10, No. 3

173--187

In biometrics, methods which are able to precisely adapt to the biometric features of users are much sought after. They use various methods of artificial intelligence, in particular methods from the group of soft computing. In this paper, we focus on on-line signature verification. Such signatures are complex objects described not only by the shape but also by the dynamics of the signing process. In standard devices used for signature acquisition (with an LCD touch screen) this dynamics may include pen velocity, but sometimes other types of signals are also available, e.g. pen pressure on the screen surface (e.g. in graphic tablets), the angle between the pen and the screen surface, etc. The precision of the on-line signature dynamics processing has been a motivational springboard for developing methods that use signature partitioning. Partitioning uses a well-known principle of decomposing the problem into smaller ones. In this paper, we propose a new partitioning algorithm that uses capabilities of the algorithms based on populations and fuzzy systems. Evolutionary-fuzzy partitioning eliminates the need to average dynamic waveforms in created partitions because it replaces them. Evolutionary separation of partitions results in a better matching of partitions with reference signatures, eliminates disproportions between the number of points describing dynamics in partitions, eliminates the impact of random values, separates partitions related to the signing stage and its dynamics (e.g. high and low velocity of signing, where high and low are imprecise-fuzzy concepts). The operation of the presented algorithm has been tested using the well-known BioSecure DS2 database of real dynamic signatures.

Automatyczna weryfikacja klienta bankowego w oparciu o multimodalne technologie biometryczne

Czyżewski A., Hoffmann P., Bogdanis G.

Elektronika : konstrukcje, technologie, zastosowania

2015

Vol. 56, nr 9

34-36

W referacie przedstawiono przegląd rozwiązań wykorzystywanych w bankach do weryfikacji tożsamości klientów. Ponadto zawarto opis metod biometrycznych aktualnie wykorzystywanych w placówkach bankowych wraz z odniesieniem do skuteczności i wygody korzystania z dostępnych rozwiązań. Zaproponowano rozszerzenie zakresu wykorzystania technologii biometrycznych, wskazując kierunek rozwoju systemów bezpieczeństwa dla poprawy dostępu do usług i zwiększenia bezpieczeństwa transakcji. Referat prezentuje założenia będące podstawą zainicjowania projektu IDENT, realizowanego w ramach Programu Badań Stosowanych NCBR, który ma na celu poprawę skuteczności weryfikacji klientów bankowych z użyciem technologii biometrycznych.

An overview of customers’ identity verification solutions used in banks is presented. A review of biometric methods currently seen in bank outlets with a reference to their effectiveness and convenience is provided. An extension of the current state of technology in the context of biometrics applications is proposed, indicating a direction of the development of authentication systems to improve the secure access to banking services. Assumptions forming the basis for initiating the project IDENT are included. The project is carried-out under the Applied Research Program NCBiR, aiming to improve the effectiveness of the verification of bank customers employing biometric technology.