Biometric authentication method and biometric authentication apparatus

摘要

According to an aspect of an embodiment, a method comprises, storing information corresponding to a plurality of users in association with first reference biometric data and second reference biometric data, the users being divided into first and second groups, the quality of the first reference biometric data of each of the users in the first group being not less than a predetermined level, the quality of the first reference biometric data of each of the users in the second group being less than the predetermined level, obtaining first biometric data of a user by inputting first biometric information of the user, providing first authentication, obtaining second biometric data of a user by inputting second biometric information of the user when the first authentication indicates presumed matching of the first biometric data with the first biometric reference data of one of the users in the second group and providing second authentication.

主权项

1. A biometric authentication method comprising:
storing information corresponding to a plurality of users in association with reference fingerprint image data of each of users and second reference biometric data of the users; obtaining fingerprint image data of a user; determining an image data quality of the obtained fingerprint image data; providing fingerprint authentication by comparison of fingerprint image data with the reference fingerprint image data when the image data quality of the obtained fingerprint image data determined by the determining is not less than a certain threshold level; obtaining second biometric data of the user by inputting second biometric information of the user when the image data quality of the first biometric fingerprint image data determined by the determining is less than the certain threshold level; providing second biometric authentication by comparison of the obtained second biometric data with the stored second reference biometric data of the users; and dividing the users to a first group and a second group based on qualities of the first reference biometric data of the users, qualities of first reference biometric data of users divided to the first group being larger than qualities of first reference biometric data of users divided to the second group; wherein the fingerprint authentication is performed at a higher speed than the second biometric authentication.