Device and method for the space-colorimetric measurement of...

G - Physics – 01 – J

Patent

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G01J 3/02 (2006.01) G01J 3/51 (2006.01)

Patent

CA 2712968

The invention relates to a device and a method for the space-colorimetric measurement of a three-dimensional object, in order to digitally model the low-relief and the colorimetric coordinates of this object according to multiple analysis points. In order to do so, the measuring device of the invention combines a lighting means with at least four optical detection means, including at least two twin detection means sensitive to substantially identical light wavelength ranges, in order to determine by stereoscopic effect the low-relief of the object analysed. The invention thus proposes a device for the space-colorimetric measurement of a three-dimensional object (2), that comprises a detection head (4) including a lighting means (14) for the object and at least four detection means (16) for detecting the light reflected by the object (2), wherein said device further includes a unit (8) for processing the information received by the detection means (16). At least two twin detection means (16c, 16e) are sensitive to substantially identical light wavelength ranges.

La présente invention vise un dispositif et un procédé de mesure spatio-colorimétrique d'un objet tridimensionnel permettant de modéliser numériquement les bas reliefs et les coordonnées colorimétriques de cet objet selon une multitude de points d'analyse. Pour ce faire, le dispositif de mesure selon l'invention propose de combiner des moyens d'éclairage avec au moins quatre moyens de détection optiques, dont au moins deux moyens de détection jumeaux sensibles à des plages de longueurs d'onde lumineuse sensiblement identiques, de façon à déterminer, par effet stéréoscopique, le bas relief de l'objet analysé. A ce titre l'invention propose un dispositif de mesure spatio-colorimétrique d'un objet (2) tridimensionnel comportant une tête de détection (4) constituée de moyens d'éclairage (14) de l'objet et d'au moins quatre moyens de détection (16) de la lumière-réfléchie-par-l'objet (2), le-dispositif- comportant en outre une unité de traitement 8 des informations reçues par les moyens de détection (16). Au moins deux moyens de détection jumeaux (16c, 16e) sont sensibles à des plages de longueurs d'onde lumineuse sensiblement identiques.

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