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:
Nov. 17, 2020
Filed:
Feb. 20, 2020
Keyence Corporation, Osaka, JP;
Masayasu Ikebuchi, Osaka, JP;
KEYENCE CORPORATION, Osaka, JP;
Abstract
To provide a three-dimensional coordinate measuring device capable of performing highly reliable shape measurement at high accuracy without complicated calibration work. A motorized rotation stage is rotatably supported with respect to a reference base. A reference camera is fixed to the reference base, the reference camera captures an image of a plurality of reference markers provided on the motorized rotation stage. At the time of calibration, a plurality of markers of the reference member are captured at respective different postures of the motorized rotation stage. New camera parameters are calculated based on a plurality of reference images and reference marker information indicating the arrangement of the plurality of markers and then the camera parameters in the main body memory are updated to the new camera parameters.