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1. (WO2019050454) METHOD AND FINGERPRINT SENSING SYSTEM FOR DETERMINING THAT A FINGER COVERS A SENSOR AREA OF A FINGERPRINT SENSOR
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Pub. No.: WO/2019/050454 International Application No.: PCT/SE2018/050885
Publication Date: 14.03.2019 International Filing Date: 03.09.2018
IPC:
G06K 9/00 (2006.01) ,G06K 9/03 (2006.01) ,G06K 9/20 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
03
Detection or correction of errors, e.g. by rescanning the pattern
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
20
Image acquisition
Applicants:
FINGERPRINT CARDS AB [SE/SE]; Box 2412 403 16 Göteborg, SE
Inventors:
BJERRE, Troels; DK
Agent:
KRANSELL & WENNBORG KB; P.O. Box 2096 403 12 GÖTEBORG, SE
Priority Data:
1751086-807.09.2017SE
Title (EN) METHOD AND FINGERPRINT SENSING SYSTEM FOR DETERMINING THAT A FINGER COVERS A SENSOR AREA OF A FINGERPRINT SENSOR
(FR) PROCÉDÉ ET SYSTÈME DE DÉTECTION D'EMPREINTES DIGITALES PERMETTANT DE DÉTERMINER QU'UN DOIGT COUVRE UNE ZONE DE CAPTEUR D'UN CAPTEUR D'EMPREINTES DIGITALES
Abstract:
(EN) The present disclosure relates to a method of determining that a finger covers a sensor area of a fingerprint sensor. The method comprises, on a surface of the fingerprint sensor, receiving a finger having a fingerprint topography. The method also comprises, by means of the fingerprint sensor, acquiring an image of the fingerprint of the received finger. The method also comprises dividing an image area (41)of the acquired image, corresponding to the sensor area of the fingerprint sensor, into a plurality of image regions (r), said regions partly overlapping each other and covering the whole image area. The method also comprises, based on image analysis of each of the plurality of image regions, determining that the finger covers the whole sensor area.
(FR) La présente invention concerne un procédé permettant de déterminer qu'un doigt couvre une zone de capteur d'un capteur d'empreintes digitales. Le procédé comprend, sur une surface du capteur d'empreintes digitales, la réception d'un doigt ayant une topographie d'empreintes digitales. Le procédé comprend également, au moyen du capteur d'empreintes digitales, l'acquisition d'une image de l'empreinte digitale du doigt reçu. Le procédé consiste également à diviser une zone d'image (41) de l'image acquise, correspondant à la zone de capteur du capteur d'empreintes digitales, en une pluralité de régions d'image (r), lesdites régions se chevauchant partiellement et recouvrant la totalité de la zone d'image. Le procédé comprend également, sur la base d'une analyse d'image de chacune de la pluralité de régions d'image, la détermination que le doigt couvre l'ensemble de la zone de capteur.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)