Biometric authentication device and biometric information processing device

摘要

A fingerprint image obtaining unit 1 obtains a fingerprint image of multiple fingers. A vein image obtaining unit 3 obtains a palm vein image. An authentication information DB 6 stores reference vein characteristic information, and a reference direction of a predetermined finger in a reference palm vein image for which the reference vein characteristic information is obtained. A reference obtaining unit 20 detects a longitudinal direction of a predetermined finger based on the fingerprint image. A position correcting unit 40 corrects the palm vein image based on the longitudinal direction of the predetermined finger, and the reference direction of the predetermined finger. A vein characteristic information extracting unit 4 obtains vein characteristic information from a corrected palm vein image. A verification processing unit 32 matches the vein characteristic information obtained with the reference vein characteristic information for authentication.

主权项

1. A biometric authentication device comprising:
a fingerprint sensor configured to have a region on which multiple fingers are to be placed; a vein sensor configured to have a region on which a palm is to be placed; and a processer configured to execute a process including: obtaining fingerprint information from fingerprints of fingers recognized by the fingerprint sensor; obtaining vein information from a palm recognized by the vein sensor; obtaining fingerprint position information indicating fingerprint positions on the fingerprint sensor from the fingerprint information; obtaining palm position information indicating a palm position on the vein sensor from the vein information; determines how a palm is placed on the vein sensor based on one of or both the fingerprint information and the fingerprint position information, and how fingers are placed on the fingerprint sensor based on one of or both the vein information and the palm position information; determining position correcting information on one of or both the fingerprint position and the palm position based on how fingers are placed on the fingerprint sensor and how a palm is placed on the vein sensor; and notifying position correcting information obtained by the determining.