Biometric training and matching engine

摘要

The present disclosure concerns a method of identifying a biometric record of an individual in a database (108) having a plurality of biometric records, the method involving: during a training phase: applying by a processing device a matching operation to determine scores for a similarity between at least one training biometric sample of each of a plurality of training records and at least one probe sample; based on said scores, determining a threshold value (STH,MTH); and during an identification phase: evaluating at least one reference biometric sample of each of the records of said database to determine a parameter value for each record; selecting a subset of said records by comparing each of said parameter values with said threshold value; and applying a matching operation to the selected records to determine whether an input biometric sample matches a reference biometric sample of one of said selected records.

主权项

1. A method comprising:
applying, by a processing device, a first matching operation to determine scores for a similarity between at least one training biometric sample, of each of a plurality of training records, and at least one probe sample; determining, by the processing device and based on the scores, a threshold value; evaluating at least one reference biometric sample of each biometric record, of a plurality of biometric records of a database, to determine a parameter value for each biometric record of the plurality of biometric records; selecting a subset of the plurality of biometric records by comparing the parameter value, determined for each biometric record of the plurality of biometric records, with the threshold value; and applying a second matching operation to the selected subset of the plurality of biometric records to determine whether an input biometric sample matches a reference biometric sample of one biometric record of the selected subset of the plurality of biometric records.