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:
Oct. 16, 2018
Filed:
Mar. 30, 2016
Mitutoyo Corporation, Kanagawa, JP;
Hiroyuki Yoshida, Kawasaki, JP;
Akira Takada, Yokohama, JP;
Makoto Kaieda, Miyazaki, JP;
Gyokubu Cho, Kanagawa, JP;
Koichi Komatsu, Kawasaki, JP;
Hidemitsu Asano, Kawasaki, JP;
Takashi Hanamura, Hadano, JP;
Takuho Maeda, Kawasaki, JP;
Isao Tokuhara, Kawasaki, JP;
MITUTOYO CORPORATION, Kanagawa, JP;
Abstract
A distance in a scanning direction between a first set of edges which face each other and exhibit an opposite change between light and dark is measured by an image measuring machine, and a bias correction value is calculated based on a difference between a measured value and a true value. Using the bias correction value, detection point correction values, which are correction values in various directions of edge detection points detected by a scan of a measured object using the image measuring machine, are calculated; a correction amount used in correction of the edge detection points is specified based on the detection point correction value in each direction; and the edge detection points are corrected using the correction amount.