公开(公告)号：US20210209336A1

公开(公告)日：2021-07-08

申请号：US16755904

申请日：2018-10-05

Applicant: Fingerprint Cards AB

Inventor： Kenneth JONSSON ,  Alaa HALAWANI

IPC: G06K9/00 ,  G06K9/62 ,  G06K9/46 ,  G06N20/10

Abstract: The present disclosure relates to a method performed in a fingerprint analysis system for facilitating differentiating between a live finger and a spoof finger. The method comprises acquiring a plurality of time-sequences of images, each of the time-sequences showing a respective finger as it engages a detection surface of a fingerprint sensor. Each of the time-sequences comprises at least a first image and a last image showing a fingerprint topography of the finger, wherein the respective fingers of some of the time-sequences are known to be live fingers and the respective fingers of some other of the time-sequences are known to be spoof fingers. The method also comprises training a machine learning algorithm on the plurality of time-sequences to produce a model of the machine learning algorithm for differentiating between a live finger and a spoof finger.

公开(公告)号：US20180225495A1

公开(公告)日：2018-08-09

申请号：US15842164

申请日：2017-12-14

Applicant: Fingerprint Cards AB

Inventor： Kenneth JONSSON ,  David TINGDAHL

IPC: G06K9/00

Abstract: The present invention generally relates to a method for authenticating a finger of a user of an electronic device comprising a fingerprint sensor for sensing a fingerprint pattern, the method comprising the steps of: acquiring a candidate fingerprint image; determining, based on the candidate fingerprint image, a humidity level indication indicative of the humidity level of the finger; performing an authentication pre-process based on the humidity level indication; performing a fingerprint authentication process based on the pre-process to authenticate the user.

公开(公告)号：US20200226340A1

公开(公告)日：2020-07-16

申请号：US16830871

申请日：2020-03-26

Applicant: Fingerprint Cards AB

Inventor： Kenneth JONSSON ,  David TINGDAHL

IPC: G06K9/00

Abstract: The present invention generally relates to a method for authenticating a finger of a user of an electronic device comprising a fingerprint sensor for sensing a fingerprint pattern, the method comprising the steps of: acquiring a candidate fingerprint image; determining, based on the candidate fingerprint image, a humidity level indication indicative of the humidity level of the finger; performing an authentication pre-process based on the humidity level indication; performing a fingerprint authentication process based on the pre-process to authenticate the user.