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1. WO2007090945 - METHOD OF TRACKING THE POSITION OF THE HEAD IN REAL TIME IN A VIDEO IMAGE STREAM

Publication Number WO/2007/090945
Publication Date 16.08.2007
International Application No. PCT/FR2007/000176
International Filing Date 31.01.2007
IPC
G06T 7/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
CPC
G06K 9/00261
GPHYSICS
06COMPUTING; CALCULATING; 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
00221Acquiring or recognising human faces, facial parts, facial sketches, facial expressions
00228Detection; Localisation; Normalisation
00261using comparisons between temporally consecutive images
G06T 2207/10016
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
10Image acquisition modality
10016Video; Image sequence
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 7/248
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
20Analysis of motion
246using feature-based methods, e.g. the tracking of corners or segments
248involving reference images or patches
G06T 7/73
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
70Determining position or orientation of objects or cameras
73using feature-based methods
Applicants
  • FRANCE TELECOM [FR]/[FR] (AllExceptUS)
  • FAURE, Julien [FR]/[FR] (UsOnly)
  • PALLONE, Grégory [FR]/[FR] (UsOnly)
Inventors
  • FAURE, Julien
  • PALLONE, Grégory
Agents
  • BEAUVAIS, Emmanuelle
Priority Data
060108007.02.2006FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD OF TRACKING THE POSITION OF THE HEAD IN REAL TIME IN A VIDEO IMAGE STREAM
(FR) PROCEDE POUR SUIVRE LA POSITION DE LA TETE EN TEMPS REEL DANS UN FLUX D'IMAGES VIDEO
Abstract
(EN)
The invention relates to a method of tracking the position of the bust of a user on the basis of a video image stream, said bus comprising the user's torso and head, the method comprising the determination of the position of the torso on a first image, in which method a virtual reference frame is associated with the torso on said first image, and in which method, for a second image, a new position of the virtual reference frame is determined on said second image, and, a relative position of the head with respect to said new position of the virtual reference frame is measured by comparison with the position of the virtual reference frame on said first image, so as to determine independently the movements of the head and the torso.
(FR)
L'invention concerne un procédé de suivi de la position du buste d'un utilisateur à partir d'un flux d'images vidéo, ledit buste comprenant le torse et la tête de l'utilisateur, le procédé comportant la détermination de la position du torse sur une première image, dans lequel un référentiel virtuel est associé au torse sur ladite première image, et dans lequel, pour une seconde image on détermine une nouvelle position du référentiel virtuel sur ladite seconde image, et, on mesure une position relative de la tête par rapport à ladite nouvelle position du référentiel virtuel par comparaison avec la position du référentiel virtuel sur ladite première image, pour déterminer indépendamment les mouvements de la tête et du torse.
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