Research on 3D measurement model by line structure light vision

Siyuan Liu; Yachao Zhang; Yunhui Zhang; Tianchi Shao; Minqiao Yuan

doi:10.1186/s13640-018-0330-6

Research on 3D measurement model by line structure light vision

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

6 Scopus Citations

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Author(s)

Siyuan Liu
Yachao Zhang
Yunhui Zhang
Tianchi Shao
Minqiao Yuan

Related Research Unit(s)

Department of Biomedical Engineering

Detail(s)

Original language	English
Article number	88
Journal / Publication	Eurasip Journal on Image and Video Processing
Volume	2018
Publication status	Published - 18 Sep 2018

Link(s)

DOI	DOI https://doi.org/10.1186/s13640-018-0330-6 Final Published version
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Attachment(s)	Documents 26136468.pdf Final Published version, 4.21 MB, PDF Publisher's Copyright Statement This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85053441805&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(17340b1c-0031-4b2b-a583-56a909a75891).html

Abstract

For serious radial distortion and high precision measurement, 3D measurement model is studied in the paper. Based on the two-step calibration algorithm, a round initialization window is proposed to calculate the initial value of the camera parameters for nonlinear optimization. In order to solve the problem that the Supersonic Transport Evaluation Group algorithm of light stripe center extraction has a large amount of computation, a method is presented by normalized correlation coefficient (NCC) method and principal component analysis (PCA). Finally, the coordinates of the central stripe could be obtained based on the bilinear interpolation and parabolic fitting. With the parameters of the structured light plane that could be obtained by the coordinates of the central stripe, the height of block gauge is measured by the 3D measurement model. The experiment results showed that the average measurement error is 0.0191 mm, and the strip extraction speed is improved.