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1. WO2020108834 - SYSTEM AND METHOD FOR HUMAN GAIT ANALYSIS

Publication Number WO/2020/108834
Publication Date 04.06.2020
International Application No. PCT/EP2019/077113
International Filing Date 07.10.2019
IPC
A61B 5/11 2006.01
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
A61B 5/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
G06T 7/20 2017.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
20Analysis of motion
CPC
A61B 5/112
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording 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
112Gait analysis
A61B 5/1128
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording 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
1126using a particular sensing technique
1128using image analysis
A61B 5/7267
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7235Details of waveform analysis
7264Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems
7267involving training the classification device
G06T 2207/20084
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
20Special algorithmic details
20084Artificial neural networks [ANN]
G06T 2207/30196
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
30Subject of image; Context of image processing
30196Human being; Person
G06T 7/0016
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
0002Inspection of images, e.g. flaw detection
0012Biomedical image inspection
0014using an image reference approach
0016involving temporal comparison
Applicants
  • LINDERA GMBH [DE]/[DE]
Inventors
  • PITTERS, Helmut H.
Agents
  • PETER BITTNER UND PARTNER
  • ZAHN, Matthias
Priority Data
18208400.426.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR HUMAN GAIT ANALYSIS
(FR) SYSTÈME ET PROCÉDÉ D’ANALYSE DE LA DÉMARCHE D’UN ÊTRE HUMAIN
Abstract
(EN)
A computer-implemented method, computer program product and computer system (100) for human gait analysis. Via an interface (110) of the system a video stream (202) is obtained from a monocular camera device (201). The video stream (202) includes a plurality of frames reflecting the walk of a human individual (10). A skeletal motion extractor (120) of the system extracts from the video stream a skeletal motion associated with the individual, by inferring, from the obtained video stream, three-dimensional gait information. The three- dimensional gait information includes estimates of the individual's joint locations including at least the individual's foot locations on each frame, wherein the estimates are derived by matching for each frame two-dimensional coordinates of the respective frame with respective three-dimensional model information of the individual's body. A gait parameter determining module (130) of the system determines one or more gait parameters of the individual based on the individual's foot locations in local extrema frames showing local extrema of the distance between one foot location of the individual and a corresponding reference joint location.
(FR)
La présente invention concerne un procédé mis en œuvre par ordinateur, un produit-programme d'ordinateur et un système informatique (100) pour l’analyse de la démarche d’un être humain. Par l’intermédiaire d’une interface (110) du système, un flux vidéo (202) est obtenu à partir d’un dispositif de caméra monoculaire (201). Le flux vidéo (202) comprend une pluralité de trames reflétant la marche d’une personne (10). Un extracteur de mouvement du squelette (120) du système extrait depuis le flux vidéo un mouvement de squelette associé à l’individu, en inférant, à partir du flux vidéo obtenu, des informations tridimensionnelles de démarche. Les informations tridimensionnelles de démarche comprennent les estimations des localisations d’articulation de l’individu comprenant au moins les localisations des pieds de l’individu sur chaque trame, les estimations étant dérivées en faisant correspondre chaque coordonnée bidimensionnelle de trame de la trame respective aux informations tridimensionnelles de modèle du corps de l’individu. Un module de détermination des paramètres de démarche (130) du système détermine un ou plusieurs paramètres de démarche de l’individu sur la base des localisations des pieds de l’individu dans des trames locales extrêmes présentant les extrêmes locales de la distance entre une localisation des pieds de l’individu et une localisation d’articulation de référence correspondante.
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