METHOD AND APPARATUS FOR CALIBRATING CIRCULAR OBJECTS USING A COMPUTER TRACKING SYSTEM

摘要

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 (9 0) in order to calibrate such an object having a circular portion.