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1. WO2013156530 - 3D SCANNER USING MERGED PARTIAL IMAGES

Publication Number WO/2013/156530
Publication Date 24.10.2013
International Application No. PCT/EP2013/058017
International Filing Date 17.04.2013
IPC
G01B 11/245 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
24for measuring contours or curvatures
245using a plurality of fixed, simultaneously operating transducers
G01B 11/25 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
24for measuring contours or curvatures
25by projecting a pattern, e.g. moiré fringes, on the object
CPC
G01B 11/25
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
24for measuring contours or curvatures
25by projecting a pattern, e.g. ; one or more lines,; moiré fringes on the object
G01B 11/2545
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
24for measuring contours or curvatures
25by projecting a pattern, e.g. ; one or more lines,; moiré fringes on the object
2545with one projection direction and several detection directions, e.g. stereo
G01B 2210/52
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
2210Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
52Combining or merging partially overlapping images to an overall image
H04N 13/239
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
13Stereoscopic video systems; Multi-view video systems; Details thereof
20Image signal generators
204using stereoscopic image cameras
239using two 2D image sensors having a relative position equal to or related to the interocular distance
Applicants
  • 3SHAPE A/S [DK]/[DK]
Inventors
  • JENSEN, Stefan, Elmsted
  • HØJGAARD, Thomas, Allin
  • ÖJELUND, Henrik
  • HOLLENBECK, Karl-Josef
Agents
  • MÜNZER, Marc
Priority Data
PA 2012 7019718.04.2012DK
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) 3D SCANNER USING MERGED PARTIAL IMAGES
(FR) DISPOSITIF DE BALAYAGE 3D UTILISANT DES IMAGES PARTIELLES FUSIONNÉES
Abstract
(EN)
Disclosed is a structured light 3D scanner based on the principle of triangulation with a light source for generating a light pattern, two cameras with two-dimensional sensors recording the reflection of the light pattern from a target object, and one axis moving the cameras. Wherein the cameras are arranged with at least partly overlapping fields of view and where the sensors in the cameras are read out partially and concurrently during at least some period of the scanning process, thus providing partial images and where the partial images are merged prior to performing the triangulation calculations.
(FR)
La présente invention concerne un dispositif de balayage 3D à lumière structurée qui est basé sur le principe de la triangulation, le dispositif comprenant une source de lumière servant à générer un profil de lumière, deux caméras comportant des capteurs bidimensionnels enregistrant la réflexion du profil de lumière provenant d'un objet cible, et un axe pour déplacer les caméras. Les caméras sont disposées de façon à avoir des champs de vision se chevauchant au moins partiellement et les capteurs des caméras sont lus partiellement et simultanément pendant au moins une certaine période du processus de balayage, ce qui permet d'obtenir des images partielles, les images partielles étant ensuite fusionnées avant l'exécution des calculs de triangulation.
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