Method and apparatus for calibrating circular objects using...

Details Method and apparatus for calibrating circular objects using... Method and apparatus for calibrating circular objects using...

G - Physics

01

B

G01B 21/04 (2006.01) G01B 5/008 (2006.01) G01B 5/012 (2006.01) G08C 21/00 (2006.01)

Patent

CA 2604619

A method of calibrating a circular portion of an object (32), such as to determine the center point (38) thereof, is provided. The method comprising determining spatial coordinates of at least two points (40) on a circumferential edge (33) of the circular portion of the object (32), and calculating the center point (38) of the circular portion using the spatial coordinates of the two points (40) and a geometric parameter (39) representative of the diameter of the circular portion. A calibration device (10) and system are also provided for use with a computer tracking system (90) in order to calibrate such an object having a circular portion.

L~invention concerne une méthode pour étalonner une partie circulaire d~un objet (32) de façon à en déterminer le point central (38). La méthode comprend la détermination des coordonnées spatiales d~au moins deux points (40) sur un bord de circonférence (33) de la partie circulaire de l~objet (32) et le calcul du point central (38) de la partie circulaire au moyen des coordonnées spatiales des deux points (40) et d~un paramètre géométrique (39) représentatif du diamètre de la partie circulaire. Un dispositif d~étalonnage (10) et un système sont également proposés, à utiliser avec un système informatisé de suivi (90) de façon à étalonner un tel objet ayant une partie circulaire.

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