公开(公告)号：US20170248410A1

公开(公告)日：2017-08-31

申请号：US15440118

申请日：2017-02-23

Applicant: MITUTOYO CORPORATION

Inventor： Hiroshi SAKAI ,  Yutaka WATANABE ,  Yasuhiro TAKAHAMA ,  Harumasa ITO ,  Yuji KUDO

IPC: G01B11/24 ,  G01B11/30 ,  G01B11/14

CPC classification number: G01B11/2441 ,  G01B11/14 ,  G01B11/303 ,  G01B21/04 ,  G01B2210/52

Abstract: According to an embodiment of the present invention, a method of measuring a surface of an object having a curved shape by measuring a distance from a measurement head to the object, includes: setting a measuring region of the object and a threshold value of concave and convex; acquiring shape reference data including the curved shape of the object; acquiring three-dimensional data of the surface of the object by measuring the distance between the object in the measuring region and the measurement head; acquiring curve removed data by removing the shape reference data from the three-dimensional data; calculating second reference data by calculating first reference data based on the curve removed data, by removing data exceeding the threshold value with respect to the first reference data, from the curve removed data, and by averaging the curve removed data; and calculating shape data of the concave and convex.

公开(公告)号：US20240280359A1

公开(公告)日：2024-08-22

申请号：US18435289

申请日：2024-02-07

Applicant: MITUTOYO CORPORATION

Inventor： Yuji KUDO

IPC: G01B11/26

CPC classification number: G01B11/26

Abstract: A calibration method including: an imaging step of capturing a part of the calibration jig with a first imaging part and a second imaging part; a first identifying step of identifying first coordinate positions of a part of the calibration jig on the basis of a capturing result of the first imaging part; a second identifying step of identifying second coordinate positions of a part of the calibration jig on the basis of a capturing result of the second imaging part; a rotating step of rotating the calibration jig; a repeating step of repeating the imaging step, the first identification step, the second identification step, and the rotating step; and identifying a rotation matrix for rotating the first coordinate positions or the second coordinate positions to perform a coordinate transformation and a translation vector for translating the first coordinate positions or the second coordinate positions.

公开(公告)号：US20170248419A1

公开(公告)日：2017-08-31

申请号：US15435924

申请日：2017-02-17

Applicant: MITUTOYO CORPORATION

Inventor： Yuji KUDO

IPC: G01B21/20 ,  G01M15/04

CPC classification number: G01B21/20 ,  G01B5/003 ,  G01B5/061 ,  G01B5/12 ,  G01B11/0608 ,  G01B11/12 ,  G01B11/2441 ,  G01B11/303 ,  G01B21/04 ,  G01M15/042

Abstract: Provided is an information processing apparatus including: an input unit into which shape data of a surface to be measured including a plurality of recesses is input; and a setting unit that detects each of the plurality of recesses on the basis of the input shape data and sets, for the detected recess, a region to be removed including the recess.