System and method for optical position measurement and...

Details System and method for optical position measurement and... System and method for optical position measurement and...

2011-01-25

2011-01-25

Tabatabai, Abolfazl (Department: 2624)

Image analysis

Applications

Biomedical applications

C600S426000

Reexamination Certificate

active

07876942

ABSTRACT:
A system for measuring the position of a hand-held tool relative to a body in six degrees of freedom employs a camera attached via a mechanical linkage to the tool so that the camera moves together with the proximal portion of the tool and has a field of view including the distal end of the tool. A processing system processes images from the camera to determine a position of at least part of the tool. By employing optically identifiable fiducial reference points defined on the external surface of the body, a projection of the tool tip position onto a plane containing the target can be derived and displayed together with the target position, thereby facilitating guiding the tool to the target.

REFERENCES:
patent: 6216029 (2001-04-01), Paltieli
patent: 6221007 (2001-04-01), Green
patent: 2006/0094958 (2006-05-01), Marquart et al.

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