Determination of chimney non-verticality from TLS data using RANSAC method

Pleterski, Žan (author), Rak, Gašper (author), Kregar, Klemen (author)

The continuous monitoring of tall industrial buildings is necessary to ensure safe operation. Withtechnological advances interrestrial laser scanning and other non-contact measurement methods, the methods and techniques for assessing the stability of tall industrial chimneys are evolving. This paper presents a method for determining the non-verticality and straightness of chimneys that offers significant advantages over existing methods. Narrow bands of scanned point clouds are processed at selected height intervals. Using the RANSAC method, points that do not belong to the chimney shell are filtered and the centre of the circle or ellipse is adjusted using the least squares method. The proposed method enables the efficient filtering of point clouds due to frequent obstructions on the chimney shell, the determination of the regularity of the chimney shell shape, a mathematical analysis of the chimney axis curvature, and an intuitive graphical representation of chimney non-verticality. The comparison of the results with other studies confirms the efficiency of the method.

• Language: English
• Keywords: chimney, terrestrial laser scanning, non-verticality, RANSAC, least squares method, deformations
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Author Accepted Manuscript
• Publication date: 04.12.2024
• Year: 2024
• Number of pages: 19 str.
• Numbering: Vol. 16, iss. 23, art. 16234541
• PID: 20.500.12556/RUL-165853
• UDC: 528.7:624
• ISSN on article: 2072-4292
• DOI: 10.3390/rs16234541
• COBISS.SI-ID: 218414339
• Publication date in RUL: 12.12.2024

Record is a part of a journal

• Title: Remote sensing
• Shortened title: Remote sens.
• Publisher: MDPI
• ISSN: 2072-4292
• COBISS.SI-ID: 32345133

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: dimnik, terestrično lasersko skeniranje, nevertikalnost, RANSAC, metoda najmanjših kvadratov, deformacije

Projects

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: P2-0180-2022
• Name: Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: P2-0227-2018
• Name: Geoinformacijska infrastruktura in trajnostni prostorski razvoj Slovenije