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1. (WO2013145665) APPARATUS, METHOD AND COMPUTER PROGRAM FOR THREE-DIMENSIONAL MEASUREMENT

Pub. No.:    WO/2013/145665    International Application No.:    PCT/JP2013/001944
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 23 00:59:59 CET 2013
IPC: G01B 11/00
G01B 11/25
Applicants: CANON KABUSHIKI KAISHA
Inventors: MIYAGAWA, Hiroshi
Title: APPARATUS, METHOD AND COMPUTER PROGRAM FOR THREE-DIMENSIONAL MEASUREMENT
Abstract:
A three-dimensional measuring apparatus 1 projects slit light from a projector 7 onto a work 2 and a stereo camera 5 captures an image of the work projected by the slit light. A control apparatus 10 of the three-dimensional measuring apparatus 1 temporarily identifies a correspondence between a bright line 4j on a first image of the captured stereo image and a light-section plane 6Pj and projects the bright line 4j onto the light-section plane 6Pj. The bright line projected onto the light-section plane 6Pj is projected onto a second image. The control apparatus 10 calculates the level of similarity between a bright line 4jX projected onto the second image and a bright line on the second image and determines a result of identified correspondence relationship between the bright line 4jX and the bright line on the second image.