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...

2007-11-27

2007-11-27

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Position measurement

C600S427000, C606S130000, C073S001790, C073S001810, C702S107000

Reexamination Certificate

active

11434787

ABSTRACT:
A method of calibrating a circular portion of an object, such as to determine the center point of the object, is provided. The method includes determining spatial coordinates of at least two points on a circumferential edge of the circular portion of the object, and calculating the center point of the circular portion using the spatial coordinates of the two points and a geometric parameter representative of the diameter of the circular portion. A calibration device and system are also provided for use with a computer tracking system in order to calibrate such an object having a circular portion.

REFERENCES:
patent: 5987960 (1999-11-01), Messner et al.
patent: 6190395 (2001-02-01), Williams
patent: 6697664 (2004-02-01), Kienzle III et al.
patent: 02061371 (2002-08-01), None
International Search Report of PCT application No. PCT/CA2006/000815.

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