Method and apparatus to relate biometric samples to target FAR and FRR with predetermined confidence levels

摘要

At least two biometric measurements of a person are collected, then a statistical measure based on the measurements is computed. The statistical measure is a bounded estimate of the discriminative power of a test based on the measurements. While the discriminative power is less than a target value, additional biometric measurements are collected. When enough measurements have been collected, a biometric template is constructed from the measurements and stored for use in future identifications. Systems and software to implement similar methods are also described and claimed.

主权项

1. A method comprising:
a. collecting a plurality of biometric measurements of a user; b. computing an estimated count of biometric measurements required to achieve target values for false rejection rate (FRR) or false acceptance rate (FAR) based on the plurality of biometric measurements; c. while a number of the plurality of biometric measurements is less than the estimated count of biometric measurements, collecting a supplemental biometric measurement of the user and computing a new estimated count of measurements required to achieve target values for false rejection rate (FRR) or false acceptance rate (FAR) based on the plurality of biometric measurements and the supplemental biometric measurement; and d. storing a biometric template constructed from the plurality of biometric measurements and any supplemental biometric measurements.