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1. WO2015139750 - SYSTEM AND METHOD FOR MOTION CAPTURE

Publication Number WO/2015/139750
Publication Date 24.09.2015
International Application No. PCT/EP2014/055591
International Filing Date 20.03.2014
IPC
G06K 9/00 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
A61B 5/11 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
103Measuring devices for testing the shape, pattern, size or movement of the body or parts thereof, for diagnostic purposes
11Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
CPC
A61B 2090/3937
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
90Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
39Markers, e.g. radio-opaque or breast lesions markers
3937Visible markers
A61B 2560/0233
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2560Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
02Operational features
0223of calibration, e.g. protocols for calibrating sensors
0228using calibration standards
0233Optical standards
A61B 2576/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2576Medical imaging apparatus involving image processing or analysis
A61B 5/0077
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
0059using light, e.g. diagnosis by transillumination, diascopy, fluorescence
0077Devices for viewing the surface of the body, e.g. camera, magnifying lens
A61B 5/1032
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
103Detecting, measuring or recording devices for testing the shape, pattern, ; colour,; size or movement of the body or parts thereof, for diagnostic purposes
1032Determining colour for diagnostic purposes
A61B 5/1101
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
103Detecting, measuring or recording devices for testing the shape, pattern, ; colour,; size or movement of the body or parts thereof, for diagnostic purposes
11Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
1101Detecting tremor
Applicants
  • TELECOM ITALIA S.P.A. [IT]/[IT]
Inventors
  • MAURO, Alessandro
  • AZZARO, Corrado
  • ALBANI, Giovanni
  • FERRARIS, Claudia
  • NERINO, Roberto
  • CHIMIENTI, Antonio
  • PETTITI, Giuseppe
  • CONTIN, Laura
Agents
  • PIETRA, Giulia
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR MOTION CAPTURE
(FR) SYSTÈME ET PROCÉDÉ DE CAPTURE DE MOUVEMENTS
Abstract
(EN) It is disclosed a motion capture system. The system comprises a wearable device (e.g. a glove) suitable for being worn by a user and comprising one or more markers having respective colors. A video camera acquires a sequence of color frames of the user moving while wearing the glove, while a range camera acquires corresponding depth frames of the same scene. A processing unit processes both color frames and depth frames for reconstructing the 3D positions of the markers. In particular, the depth information provided by the depth frames are used for isolating a validity area within the color frames, and the markers are searched based on their colors, exclusively within the validity area of the color frames. The movements of the user are then captured as a sequence of positions of the markers. Combined use of color information and depth information provide a very reliable and accurate motion capture.
(FR) La présente invention concerne un système de capture de mouvements. Le système comprend un dispositif à porter sur soi (par exemple un gant) approprié pour être porté par un utilisateur et présentant un ou plusieurs repères ayant des couleurs respectives. Une caméra vidéo obtient une séquence d'images en couleurs de l'utilisateur alors qu'il se déplace en portant le gant. Simultanément, une caméra télémétrique obtient des images de profondeur correspondantes de la même scène. Une unité de traitement traite les images en couleurs et les images de profondeur de façon à reconstruire les positions tridimensionnelles des repères. Plus précisément, les informations de profondeur fournies par les images de profondeur servent à isoler une zone de validité dans les images en couleurs. Les repères sont recherchés sur la base de leurs couleurs et exclusivement à l'intérieur de la zone de validité des images en couleurs. Les mouvements de l'utilisateur sont alors capturés sous la forme d'une séquence de positions des repères. L'utilisation combinée des informations de couleurs et des informations de profondeur permet une capture de mouvements très fiable et très précise.
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