公开(公告)号：US11315357B2

公开(公告)日：2022-04-26

申请号：US16993386

申请日：2020-08-14

Applicant: Fingerprint Cards AB

Inventor： Metodi Yankov ,  Søren Skovgaard Christensen ,  Pedro Højen-Sørensen ,  Mikkel Stegmann

IPC: G06V40/12 ,  G06V40/13 ,  G06F21/32

Abstract: The present disclosure relates to methods and devices for fingerprint recognition. In an aspect, a method of a fingerprint sensing system of extracting at least one fingerprint descriptor from an image captured by a fingerprint sensor for enrolment in the fingerprint sensing system is provided. The method comprises capturing images of a finger contacting the fingerprint sensor, detecting at least one fingerprint feature in each captured image, extracting fingerprint data from an area surrounding a location of the detected feature in each captured image, and extracting a fingerprint descriptor by performing a transform of the fingerprint data extracted from the area surrounding the location of the detected feature in each captured image, wherein a size of the area is selected such that the area comprises sufficient information to allow a duplicated descriptor to be discarded for the captured images.

公开(公告)号：US20170220845A1

公开(公告)日：2017-08-03

申请号：US15418874

申请日：2017-01-30

Applicant: Fingerprint Cards AB

Inventor： Søren Skovgaard Christensen ,  Mikkel Stegmann ,  Lars Christensen ,  Michael Sass Hansen

IPC: G06K9/00 ,  G06K9/32 ,  G06K9/62

CPC classification number: G06K9/00067 ,  G06F21/32 ,  G06K9/0002 ,  G06K9/00033 ,  G06K9/00087 ,  G06K9/3208 ,  G06K9/6215

Abstract: The present invention generally relates to a method for analyzing biometric measurements of a user, and specifically to determination of an alignment level between features of different biometric measurements acquired using a biometric sensor. The invention also relates to a corresponding fingerprint sensing system and to a computer program product.

公开(公告)号：US10268873B2

公开(公告)日：2019-04-23

申请号：US15418874

申请日：2017-01-30

Applicant: Fingerprint Cards AB

Inventor： Søren Skovgaard Christensen ,  Mikkel Stegmann ,  Lars Christensen ,  Michael Sass Hansen

IPC: G06K9/00 ,  G06K9/32 ,  G06K9/62 ,  G06F21/32

Abstract: The present invention generally relates to a method for analyzing biometric measurements of a user, and specifically to determination of an alignment level between features of different biometric measurements acquired using a biometric sensor. The invention also relates to a corresponding fingerprint sensing system and to a computer program product.