Performance Evaluation of Biometric Template Update

Romain Giot (1) , Christophe Rosenberger (1) , Bernadette Dorizzi (2, 3)

1 Equipe SAFE - Laboratoire GREYC - UMR6072
2 SAMOVAR - Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux
3 CNRS - Centre National de la Recherche Scientifique

Template update allows to modify the biometric reference of a user while he uses the biometric system. With such kind of mechanism we expect the biometric system uses always an up to date representation of the user, by capturing his intra-class (temporary or permanent) variability. Although several studies exist in the literature, there is no commonly adopted evaluation scheme. This does not ease the comparison of the different systems of the literature. In this paper, we show that using different evaluation procedures can lead in different, and contradictory, interpretations of the results. We use a keystroke dynamics (which is a modality suffering of template ageing quickly) template update system on a dataset consisting of height different sessions to illustrate this point. Even if we do not answer to this problematic, it shows that it is necessary to normalize the template update evaluation procedures.

Mots clés: template update; biometric; evaluation

Domaines: Algorithme et structure de données [cs.DS]

Romain Giot, Christophe Rosenberger, Bernadette Dorizzi. Performance Evaluation of Biometric Template Update. International Biometric Performance Testing Conference 2012, Mar 2012, Gaithersburg, MD, USA, United States. pp.1--6. ⟨hal-00674551⟩