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.

Date of Patent:
Jun. 11, 2019

Filed:

Feb. 15, 2017
Applicant:

Mitutoyo Corporation, Kawasaki, Kanagawa, JP;

Inventor:

Kaoru Miyata, Ibaraki, JP;

Assignee:

MITUTOYO CORPORATION, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 11/00 (2006.01); G06K 9/46 (2006.01); G06K 9/62 (2006.01); G06T 7/73 (2017.01); G06K 9/52 (2006.01); G06K 9/20 (2006.01); G06T 7/521 (2017.01);
U.S. Cl.
CPC ...
G01B 11/002 (2013.01); G06K 9/2036 (2013.01); G06K 9/4604 (2013.01); G06K 9/4661 (2013.01); G06K 9/52 (2013.01); G06K 9/6215 (2013.01); G06T 7/521 (2017.01); G06T 7/73 (2017.01);
Abstract

The geometry measurement apparatus includes: an image acquisition part that acquires a plurality of captured images generated by imaging an object to be measured, onto which a plurality of respectively different projection patterns are sequentially projected; a quantization part that generates a quantization value of a luminance value for each pixel in the plurality of captured images by comparing the luminance value with a predetermined reference value; a selection part that selects, based on the relationship between the reference value and the luminance value for a plurality of pixels having the same coordinates in the plurality of captured images, a quantization value to be used for identifying the geometry of the object to be measured, from among a plurality of quantization values corresponding to the plurality of captured images; and a geometry identification part that identifies the geometry of the object to be measured based on the quantization value selected by the selection part.


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