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Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness

Point clouds were obtained after laser scanning of the concrete panel, SMW, and sheet pile which is most widely used in retaining structures. The surface condition of the point cloud affects the displacement calculation, and hence both local roughness and global curvature of each point cloud were an...

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Autores principales: Seo, Hyungjoon, Zhao, Yang, Chen, Cheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8588410/
https://www.ncbi.nlm.nih.gov/pubmed/34770674
http://dx.doi.org/10.3390/s21217370
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author Seo, Hyungjoon
Zhao, Yang
Chen, Cheng
author_facet Seo, Hyungjoon
Zhao, Yang
Chen, Cheng
author_sort Seo, Hyungjoon
collection PubMed
description Point clouds were obtained after laser scanning of the concrete panel, SMW, and sheet pile which is most widely used in retaining structures. The surface condition of the point cloud affects the displacement calculation, and hence both local roughness and global curvature of each point cloud were analyzed using the different sizes of the kernel. The curvature of the three retaining structures was also analyzed by the azimuth angle. In this paper, artificial displacements are generated for the point clouds of 100%, 80%, 60%, 40%, and 20% of the retaining structures, and displacement and analysis errors were calculated using the C2C, C2M, and M3C2 methods. C2C method is affected by the resolution of the point cloud, and the C2M method underestimates the displacement by the location of the points in the curvature of the retaining structures. M3C2 method had the lowest error, and the optimized M3C2 parameters for analyzing the displacement were presented.
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spelling pubmed-85884102021-11-13 Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness Seo, Hyungjoon Zhao, Yang Chen, Cheng Sensors (Basel) Article Point clouds were obtained after laser scanning of the concrete panel, SMW, and sheet pile which is most widely used in retaining structures. The surface condition of the point cloud affects the displacement calculation, and hence both local roughness and global curvature of each point cloud were analyzed using the different sizes of the kernel. The curvature of the three retaining structures was also analyzed by the azimuth angle. In this paper, artificial displacements are generated for the point clouds of 100%, 80%, 60%, 40%, and 20% of the retaining structures, and displacement and analysis errors were calculated using the C2C, C2M, and M3C2 methods. C2C method is affected by the resolution of the point cloud, and the C2M method underestimates the displacement by the location of the points in the curvature of the retaining structures. M3C2 method had the lowest error, and the optimized M3C2 parameters for analyzing the displacement were presented. MDPI 2021-11-05 /pmc/articles/PMC8588410/ /pubmed/34770674 http://dx.doi.org/10.3390/s21217370 Text en © 2021 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
Seo, Hyungjoon
Zhao, Yang
Chen, Cheng
Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness
title Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness
title_full Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness
title_fullStr Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness
title_full_unstemmed Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness
title_short Displacement Estimation Error in Laser Scanning Monitoring of Retaining Structures Considering Roughness
title_sort displacement estimation error in laser scanning monitoring of retaining structures considering roughness
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8588410/
https://www.ncbi.nlm.nih.gov/pubmed/34770674
http://dx.doi.org/10.3390/s21217370
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