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A Method for Point Cloud Accuracy Analysis Based on Intensity Information

Three-dimensional laser scanning has emerged as a prevalent measurement method in numerous high-precision applications, and the precision of the obtained data is closely related to the intensity information. Comprehending the association between intensity and point cloud accuracy facilitates scanner...

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Autores principales: Li, Siyuan, Zheng, Dehua, Yue, Dongjie, Hu, Chuang, Ma, Xinjiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10675609/
https://www.ncbi.nlm.nih.gov/pubmed/38005522
http://dx.doi.org/10.3390/s23229135
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author Li, Siyuan
Zheng, Dehua
Yue, Dongjie
Hu, Chuang
Ma, Xinjiang
author_facet Li, Siyuan
Zheng, Dehua
Yue, Dongjie
Hu, Chuang
Ma, Xinjiang
author_sort Li, Siyuan
collection PubMed
description Three-dimensional laser scanning has emerged as a prevalent measurement method in numerous high-precision applications, and the precision of the obtained data is closely related to the intensity information. Comprehending the association between intensity and point cloud accuracy facilitates scanner performance assessment, optimization of data acquisition strategies, and evaluation of point cloud precision, thereby ensuring data reliability for high-precision applications. In this study, we investigated the correlation between point cloud accuracy and two distinct types of intensity information. In addition, we presented methods for assessing point cloud accuracy using these two forms of intensity information, along with their applicable scopes. By examining the percentage intensity, we analyzed the reflectance properties of the scanned object’s surface employing the Lambertian model. Our findings indicate that the Lambertian circle fitting radius is inversely correlated with the scanner’s ranging error at a constant scanning distance. Experimental outcomes substantiate that modifying the surface characteristics of the object enables the attainment of higher-precision point cloud data. By constructing a model associating the raw reflectance intensity with ranging errors, we developed a single-point error ellipsoid model to assess the accuracy of individual points within the point cloud. The experiments revealed that the ranging error model based on the raw intensity is solely applicable to point cloud data unaffected by specular reflectance properties. Moreover, the devised single-point error ellipsoid model accurately evaluates the measurement error of individual points. Both analytical methods can be utilized to evaluate the performance of the scanner as well as the accuracy of the acquired point cloud data, providing reliable data support for various high-precision applications.
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spelling pubmed-106756092023-11-12 A Method for Point Cloud Accuracy Analysis Based on Intensity Information Li, Siyuan Zheng, Dehua Yue, Dongjie Hu, Chuang Ma, Xinjiang Sensors (Basel) Article Three-dimensional laser scanning has emerged as a prevalent measurement method in numerous high-precision applications, and the precision of the obtained data is closely related to the intensity information. Comprehending the association between intensity and point cloud accuracy facilitates scanner performance assessment, optimization of data acquisition strategies, and evaluation of point cloud precision, thereby ensuring data reliability for high-precision applications. In this study, we investigated the correlation between point cloud accuracy and two distinct types of intensity information. In addition, we presented methods for assessing point cloud accuracy using these two forms of intensity information, along with their applicable scopes. By examining the percentage intensity, we analyzed the reflectance properties of the scanned object’s surface employing the Lambertian model. Our findings indicate that the Lambertian circle fitting radius is inversely correlated with the scanner’s ranging error at a constant scanning distance. Experimental outcomes substantiate that modifying the surface characteristics of the object enables the attainment of higher-precision point cloud data. By constructing a model associating the raw reflectance intensity with ranging errors, we developed a single-point error ellipsoid model to assess the accuracy of individual points within the point cloud. The experiments revealed that the ranging error model based on the raw intensity is solely applicable to point cloud data unaffected by specular reflectance properties. Moreover, the devised single-point error ellipsoid model accurately evaluates the measurement error of individual points. Both analytical methods can be utilized to evaluate the performance of the scanner as well as the accuracy of the acquired point cloud data, providing reliable data support for various high-precision applications. MDPI 2023-11-12 /pmc/articles/PMC10675609/ /pubmed/38005522 http://dx.doi.org/10.3390/s23229135 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
Li, Siyuan
Zheng, Dehua
Yue, Dongjie
Hu, Chuang
Ma, Xinjiang
A Method for Point Cloud Accuracy Analysis Based on Intensity Information
title A Method for Point Cloud Accuracy Analysis Based on Intensity Information
title_full A Method for Point Cloud Accuracy Analysis Based on Intensity Information
title_fullStr A Method for Point Cloud Accuracy Analysis Based on Intensity Information
title_full_unstemmed A Method for Point Cloud Accuracy Analysis Based on Intensity Information
title_short A Method for Point Cloud Accuracy Analysis Based on Intensity Information
title_sort method for point cloud accuracy analysis based on intensity information
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10675609/
https://www.ncbi.nlm.nih.gov/pubmed/38005522
http://dx.doi.org/10.3390/s23229135
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