On Performance Statistics for Biometric Systems

Published

October 5, 1999

Author(s)

P J. Phillips

Abstract

The major contribution of this paper is a duality between the identification and verification evaluation protocols. The duality (1) gives a mapping between identification and verification scores and (2) bounds identification and verification scores in terms of each other. In the identification--verification duality, the roles of the gallery and probes set are reversed between the two problems, and a mapping between the axis of the cumulative match curve and ROC is established. Our identificaton--verification duality thereom states that ROCs are lower bounds for cumulative match curves. We also show that the bound is tight. We use the duality bound to characterize the effect of increasing gallery size on identification performance. Our results are empirically checked using the Sep96 FERET test results for a baseline principal components analysis (PCA)-based face recognition algorithm.

Citation

Proceedings of Auto ID

Pub Type

Journals

Keywords

Biometrics, identification, ROC, verification

Citation

Phillips, P. (1999), On Performance Statistics for Biometric Systems, Proceedings of Auto ID (Accessed October 3, 2025)