Automatic Template Update Strategies for Biometrics
Tobias Scheidat, Andrey Makrushin, Claus Vielhauer · 2007
Some disadvantages of biometric systems are caused by intra-class variability that describes the fuzziness of biometric data given from a single person for one biometric characteristic. Reasons for example can be found in natural behavioral variability, poorly acquired biometric reference data, changing acquisition environments (e.g. alternating sensors) and/or in aging effects of the bearer of biometric information such wrinkles or injuries. The automatic exchange of biometric reference data sample in reference storage with another quality proofed biometric sample of particular person could greatly improve authentication performance of biometric systems. In this paper strategies are proposed to replace biometric reference samples adopting well known cache replacement strategies.