The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2000
Filed:
May. 14, 1998
Michael S Davis, Chelsea, MI (US);
Other;
Abstract
A work cell containing robot(s), video camera(s), and structured lighting source(s) is calibrated by observing targets with the camera(s) as a robot is displaced through a set of offsets. Complete information is recovered about the camera(s) calibration data and the structure of illumination from the light source(s). The robot is utilized to create known relative movements between the targets and the camera(s) and light source(s). Therefore, this technique is applicable to both the fixed and moving camera cases. Except for the target surface profile, there is no requirement to externally determine any absolute or relative positions, or any relationships either within or between the camera(s), targets, light source(s), and robot(s). Either single or multiple cameras (acting independently or in stereo) are calibrated to the robot's coordinate frame, and then optionally used as measuring devices to determine the position and form of the structured light.