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. 13, 2012
Filed:
May. 29, 2009
Bingyan Zhao, West Sacramento, CA (US);
Xiaodong Tian, West Sacramento, CA (US);
Zhe Jin, West Sacramento, CA (US);
Vijay Srivatsan, West Sacramento, CA (US);
Bingyan Zhao, West Sacramento, CA (US);
Xiaodong Tian, West Sacramento, CA (US);
Zhe Jin, West Sacramento, CA (US);
Vijay Srivatsan, West Sacramento, CA (US);
Mori Seiki Co., Ltd, Nara, JP;
Abstract
The calibration deviceis set up in a machine tooland provides: a image capture subject materialhaving a calibration patternthat includes one feature point and being attached to the spindle, two-dimensional coordinate calculation partsthat calculate the two-dimensional coordinates of feature points based on the two-dimensional image data that is created from the images of the calibration patternthat were captured at multiple movement positions of the spindleby the CCD camera; a three-dimensional coordinate calculation partthat calculates the three-dimensional coordinates of the feature points that correspond to each movement position of the spindle; and a parameter calculation partthat calculates the intrinsic parameters and extrinsic parameters of the CCD camerabased on the two-dimensional coordinates and three-dimensional coordinates at each movement position of the spindle