US 12,131,570 B2
Biometrics authentication device and biometrics authentication method for authenticating a person with reduced computational complexity
Johan Bergqvist, Zug (CH); and Arnold Herp, Moehrendorf (DE)
Assigned to Qamcom Innovation Labs AB, Gothenburg (SE)
Appl. No. 17/602,418
Filed by QAMCOM INNOVATION LABS AB, Gothenburg (SE)
PCT Filed Apr. 6, 2020, PCT No. PCT/EP2020/059714
§ 371(c)(1), (2) Date Oct. 8, 2021,
PCT Pub. No. WO2020/207945, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. 00483/19 (CH), filed on Apr. 10, 2019.
Prior Publication US 2022/0172505 A1, Jun. 2, 2022
Int. Cl. G06V 40/10 (2022.01); G06F 21/32 (2013.01); G06V 40/60 (2022.01)
CPC G06V 40/117 (2022.01) [G06F 21/32 (2013.01); G06V 40/60 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A biometrics authentication device for authenticating a person by comparing biometric features of a body part of the person with pre-stored biometric features of body parts of a plurality of registered persons, the biometrics authentication device comprising:
a biometric sensor configured to capture image data of the body part of the person; and
a processing unit configured to determine, from the captured image data:
at least one characteristic geometric body part property of the body part of the person, the at least one characteristic geometric body part property comprising a width of a hand of the person, and
the biometric features of the body part of the person,
wherein the processing unit is further configured to approve or reject authentication of the person by:
using a space defined by the at least one characteristic geometric body part property, the space being subdivided into a plurality of predefined subsets of values for the at least one characteristic geometric body part property, and
comparing the biometric features of the body part of the person only to the pre-stored biometric features of the body parts of each of the registered persons whose at least one characteristic geometric body part property is in a same predefined subset of values as the at least one characteristic geometric body part property of the person.