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1. (WO2019067704) PROCESSING VIDEO INCLUDING A PHYSICAL WRITING SURFACE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/067704 International Application No.: PCT/US2018/053097
Publication Date: 04.04.2019 International Filing Date: 27.09.2018
IPC:
H04N 7/15 (2006.01) ,H04N 5/262 (2006.01) ,G06K 9/00 (2006.01) ,G06K 9/22 (2006.01) ,G06K 9/62 (2006.01) ,G06T 7/194 (2017.01) ,G06T 7/90 (2017.01) ,G06Q 10/10 (2012.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
14
Systems for two-way working
15
Conference systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
262
Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects
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
22
using hand-held instruments
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
62
Methods or arrangements for recognition using electronic means
[IPC code unknown for G06T 7/194][IPC code unknown for G06T 7/90]
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
Q
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
10
Administration; Management
10
Office automation, e.g. computer aided management of electronic mail or groupware; Time management, e.g. calendars, reminders, meetings or time accounting
Applicants:
DOLBY LABORATORIES LICENSING CORPORATION [US/US]; 1275 Market Street San Francisco, California 94103, US
Inventors:
PORT, Timothy Alan; US
Agent:
MACK, Kevin J.; Dolby Laboratories, Inc. Intellectual Property Group 1275 Market Street San Francisco, California 94103, US
ANDERSEN, Robert L.; US
BOSE, Subroto; US
BROWN, Tyrome Y.; US
DUNCAN, Dennis John; US
HOGLUND, Heath W.; US
KONSTANTINIDES, Konstantinos; US
MACK, Kevin J.; US
TANASE, Iuliana; US
YON, Sanghyok; US
DOLBY INTERNATIONAL AB; Patent Group Europe, Apollo Building, 3E, Herikerbergweg 1-35 1101 CN Amsterdam Zuidoost, NL
Priority Data:
17193442.527.09.2017EP
62/563,71927.09.2017US
Title (EN) PROCESSING VIDEO INCLUDING A PHYSICAL WRITING SURFACE
(FR) TRAITEMENT DE VIDÉO COMPRENANT UNE SURFACE D'ÉCRITURE PHYSIQUE
Abstract:
(EN) A method of processing of a sequence of video frames from a camera capturing a writing surface for subsequent transmission to at least one of a remote videoconferencing client and a remote videoconferencing server. The method comprises receiving the sequence of video frames from the camera; and selecting an image area of interest in the video frames, comprising selecting one of a sub-area of the video frames and an entire area of the video frames. The method also comprises, for each current video frame of the sequence of video frames, generating a pen stroke mask by applying adaptive thresholding to the image area of interest. The method also comprises generating an output video frame using the pen stroke mask. Corresponding systems and computer readable media are disclosed.
(FR) La présente invention concerne un procédé de traitement d'une séquence de trames vidéo provenant d'une caméra capturant une surface d'écriture pour une transmission ultérieure à un client de vidéoconférence à distance et/ou à un serveur de vidéoconférence à distance. Le procédé consiste à recevoir la séquence de trames vidéo provenant de la caméra ; et à sélectionner une zone digne d'intérêt d'image dans les trames vidéo, y compris à sélectionner une sous-zone des trames vidéo ou une zone entière des trames vidéo. Le procédé consiste également, pour chaque trame vidéo actuelle de la séquence de trames vidéo, à générer un masque de course de stylo par application d'un seuillage adaptatif à la zone digne d'intérêt d'image. Le procédé consiste également à générer une trame vidéo de sortie à l'aide du masque de course de stylo. L'invention porte également sur des systèmes et sur des supports lisibles par ordinateur correspondants.
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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)