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A planar pattern based calibration method for high precision structured laser triangulation measurement

  • Ruiming Chen
  • , Xinghui Li
  • , Xiaohao Wang
  • , Jianxiong Li
  • , Gaopeng Xue
  • , Qian Zhou
  • , Kai Ni

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A flexible calibration method with high precision was proposed for calibration of structured laser triangulation in the applications of 3D reconstruction and point cloud processing. The camera coordinate system was chosen as the ultimate reference coordinate. In this calibration process, be required only a planar pattern placed at different orientations and positions for obtainment of the camera intrinsic parameters. And then two or more non-coplanar sets of three collinear points were calculated for the laser projection plane coefficients. A line laser triangulation measurement system is established, consisted of laser diode, cylindrical lens module and camera imaging system. Experimental results based on the constructed structured laser triangulation system revealed that accuracy of the profile measurement is less than ±0.005mm, which can meet the majority of industrial inspection applications.

Original languageEnglish
Title of host publicationOptical Metrology and Inspection for Industrial Applications VI
EditorsSen Han, Sen Han, Toru Yoshizawa, Song Zhang, Benyong Chen
PublisherSPIE
ISBN (Electronic)9781510630956
DOIs
StatePublished - 2019
Externally publishedYes
EventOptical Metrology and Inspection for Industrial Applications VI 2019 - Hangzhou, China
Duration: 21 Oct 201923 Oct 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11189
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Metrology and Inspection for Industrial Applications VI 2019
Country/TerritoryChina
CityHangzhou
Period21/10/1923/10/19

Keywords

  • 3D reconstruction
  • Calibration
  • Laser projector plane
  • Laser triangulation
  • Planar pattern

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