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1. (WO2019027506) DETERMINING SPARSE VERSUS DENSE PATTERN ILLUMINATION
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Pub. No.: WO/2019/027506 International Application No.: PCT/US2018/015594
Publication Date: 07.02.2019 International Filing Date: 26.01.2018
IPC:
G06K 9/00 (2006.01) ,G06K 9/20 (2006.01) ,H04N 5/232 (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
20
Image acquisition
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
232
Devices for controlling television cameras, e.g. remote control
Applicants:
APPLE INC. [US/US]; 1 Infinite Loop Cupertino, California 95014, US
Inventors:
FASEL, Ian R.; US
GUO, Haitao; US
KUMAR, Atulit; US
GERNOTH, Thorsten; US
Agent:
SAMPSON, Gareth M.; US
Priority Data:
62/539,74101.08.2017US
62/556,40009.09.2017US
62/556,83211.09.2017US
Title (EN) DETERMINING SPARSE VERSUS DENSE PATTERN ILLUMINATION
(FR) DÉTERMINATION D'UN ÉCLAIRAGE À MOTIF CLAIRSEMÉ VERSUS DENSE
Abstract:
(EN) An estimate of distance between a user and a camera on a device is used to determine an illumination pattern density used for speckle pattern illumination of the user in subsequent images. The distance may be estimated using an image captured when the user is illuminated with flood infrared illumination. Either a sparse speckle (dot) pattern illumination pattern or a dense speckle pattern illumination pattern is used depending on the distance between the user's face and the camera.
(FR) Selon l'invention, une estimation de distance entre un utilisateur et une caméra sur un dispositif est utilisée pour déterminer une densité de motif d'éclairage utilisée pour un éclairage à motif de tavelure de l'utilisateur dans des images subséquentes. La distance peut être estimée à l'aide d'une image capturée lorsque l'utilisateur est éclairé par un éclairage infrarouge d'inondation. Un motif d'éclairage à motif de tavelure clairsemé (point) ou un motif d'éclairage à motif de tavelure dense est utilisé en fonction de la distance entre le visage de l'utilisateur et la caméra.
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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)