G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 11/24 (2006.01) G01B 11/25 (2006.01) G01J 3/46 (2006.01) G06T 9/00 (2006.01) G06T 17/00 (2006.01) H04N 7/18 (2006.01) H04N 13/00 (2006.01)
Patent
CA 2249451
System and method for rapid collection of data points and construction of a computer model based on a multi-resolution mesh to describe the surface contours and color of an object (101). The system collects data by projecting shapes of light (121-125) against the object (101) and collecting (from a position of triangulation relative to the light projector) images of the light as it reflects from the object. The system and method are comprised of a multiple laser stripe generation process to project a number of light shapes against the object, the collection of one or more reflected laser stripes in a single image of an images collector (120) to gather sufficient information to reproduce points on the surface of the object. The system compresses the data associated with collected points, which allows for accurate values for the contours of the object to subpixel accuracy. A multi-resolution analysis, which maintains more points to resolve fine details and removes points to further smooth regions of the objects, leads to significant compression. The adaptive mesh, consisting of the connection of polygonal finite elements, is automatically generated by the system and is comprised to create multi- resolution meshes at different tolerances.
Système et procédé permettant de recueillir rapidement des points de données et de concevoir un modèle informatique en fonction d'un réseau maillé à résolutions multiples afin de décrire le contour de la surface, ainsi que la couleur d'un objet (101). Ce système recueille des données en projetant des formes lumineuses (121-125) contre l'objet (101) et en captant (depuis une position de triangulation par rapport au projecteur de lumière) des images de la lumière simultanément à la réflexion de cette dernière depuis l'objet. Ce système et ce procédé sont basés sur un processus de génération de rubans laser multiples, de manière à projeter plusieurs formes lumineuses contre l'objet, le regroupement d'un ou plusieurs rubans laser réfléchis en une seule image d'un collecteur (120) d'images permettant de rassembler des informations en quantité suffisante pour reproduire des points sur la surface de l'objet.
Lebedev Alexei L.
Migdal Alexander A.
Petrov Michael
Real-Time Geometry Corporation
Smart & Biggar
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