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A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile

To automatically measure the surface profile of a cylindrical workpiece, a high-precision multi-beam optical method is proposed in this paper. First, some successive images for the cylindrical workpiece’s surface are acquired by a multi-beam angle sensor under different light directions. Then, the l...

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Detalles Bibliográficos
Autores principales: Zhou, Yinghong, Wu, Zhiliang, Cai, Nian, Zhan, Daohua, Xu, Shaoqiu, Chen, Meiyun, Zhou, Guang, Wang, Han
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456249/
https://www.ncbi.nlm.nih.gov/pubmed/37630091
http://dx.doi.org/10.3390/mi14081555
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author Zhou, Yinghong
Wu, Zhiliang
Cai, Nian
Zhan, Daohua
Xu, Shaoqiu
Chen, Meiyun
Zhou, Guang
Wang, Han
author_facet Zhou, Yinghong
Wu, Zhiliang
Cai, Nian
Zhan, Daohua
Xu, Shaoqiu
Chen, Meiyun
Zhou, Guang
Wang, Han
author_sort Zhou, Yinghong
collection PubMed
description To automatically measure the surface profile of a cylindrical workpiece, a high-precision multi-beam optical method is proposed in this paper. First, some successive images for the cylindrical workpiece’s surface are acquired by a multi-beam angle sensor under different light directions. Then, the light directions are estimated based on the feature regions in the images to calculate surface normal vectors. Finally, according to the relationship of the surface normal vector and the vertical section of the workpiece’s surface, a depth map is reconstructed to achieve the curvature surface, which can be employed to measure the curvature radius of the cylindrical workpiece’s surface. Experimental results indicate that the proposed measurement method can achieve good measurement precision with a mean error of the curvature radius of a workpiece’s surface of 0.89% at a reasonable speed of 10.226 s, which is superior to some existing methods.
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spelling pubmed-104562492023-08-26 A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile Zhou, Yinghong Wu, Zhiliang Cai, Nian Zhan, Daohua Xu, Shaoqiu Chen, Meiyun Zhou, Guang Wang, Han Micromachines (Basel) Article To automatically measure the surface profile of a cylindrical workpiece, a high-precision multi-beam optical method is proposed in this paper. First, some successive images for the cylindrical workpiece’s surface are acquired by a multi-beam angle sensor under different light directions. Then, the light directions are estimated based on the feature regions in the images to calculate surface normal vectors. Finally, according to the relationship of the surface normal vector and the vertical section of the workpiece’s surface, a depth map is reconstructed to achieve the curvature surface, which can be employed to measure the curvature radius of the cylindrical workpiece’s surface. Experimental results indicate that the proposed measurement method can achieve good measurement precision with a mean error of the curvature radius of a workpiece’s surface of 0.89% at a reasonable speed of 10.226 s, which is superior to some existing methods. MDPI 2023-08-03 /pmc/articles/PMC10456249/ /pubmed/37630091 http://dx.doi.org/10.3390/mi14081555 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhou, Yinghong
Wu, Zhiliang
Cai, Nian
Zhan, Daohua
Xu, Shaoqiu
Chen, Meiyun
Zhou, Guang
Wang, Han
A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile
title A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile
title_full A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile
title_fullStr A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile
title_full_unstemmed A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile
title_short A High-Precision Multi-Beam Optical Measurement Method for Cylindrical Surface Profile
title_sort high-precision multi-beam optical measurement method for cylindrical surface profile
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456249/
https://www.ncbi.nlm.nih.gov/pubmed/37630091
http://dx.doi.org/10.3390/mi14081555
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