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Article

Assessment of Tree Diameter Estimation Methods from Mobile Laser Scanning in a Historic Garden

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Departamento de Ingeniería Agroforestal, Universidad Politécnica de Madrid, 28040 Madrid, Spain
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Departamento de Ingeniería Topográfica y Cartográfica, Universidad Politécnica de Madrid, 28031 Madrid, Spain
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Departamento de Ingeniería y Gestión Forestal y Ambiental, Universidad Politécnica de Madrid, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Guillermo Castilla
Forests 2021, 12(8), 1013; https://doi.org/10.3390/f12081013
Received: 7 June 2021 / Revised: 26 July 2021 / Accepted: 27 July 2021 / Published: 30 July 2021
(This article belongs to the Section Forest Inventory, Modeling and Remote Sensing)
Geo-referenced 3D models are currently in demand as an initial knowledge base for cultural heritage projects and forest inventories. The mobile laser scanning (MLS) used for geo-referenced 3D models offers ever greater efficiency in the acquisition of 3D data and their subsequent application in the fields of forestry. In this study, we have analysed the performance of an MLS with simultaneous localisation and mapping technology (SLAM) for compiling a tree inventory in a historic garden, and we assessed the accuracy of the estimates of diameter at breast height (DBH, a height of 1.30 m) calculated from three fitting algorithms: RANSAC, Monte Carlo, and Optimal Circle. The reference sample used was 378 trees from the Island Garden, a historic garden and UNESCO World Heritage site in Aranjuez, Spain. The time taken to acquire the data by MLS was 27 min 37 s, in an area of 2.38 ha. The best results were obtained with the Monte Carlo fitting algorithm, which was able to estimate the DBH of 77% of the 378 trees in the study, with a root mean squared error (RMSE) of 5.31 cm and a bias of 1.23 cm. The proposed methodology enabled a supervised detection of the trees and automatically estimated the DBH of most trees in the study, making this a useful tool for the management and conservation of a historic garden. View Full-Text
Keywords: tree inventory; point cloud; terrestrial laser scanning; SLAM; TLS; diameter at breast height (DBH); historical garden tree inventory; point cloud; terrestrial laser scanning; SLAM; TLS; diameter at breast height (DBH); historical garden
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MDPI and ACS Style

Pérez-Martín, E.; López-Cuervo Medina, S.; Herrero-Tejedor, T.; Pérez-Souza, M.A.; Aguirre de Mata, J.; Ezquerra-Canalejo, A. Assessment of Tree Diameter Estimation Methods from Mobile Laser Scanning in a Historic Garden. Forests 2021, 12, 1013. https://doi.org/10.3390/f12081013

AMA Style

Pérez-Martín E, López-Cuervo Medina S, Herrero-Tejedor T, Pérez-Souza MA, Aguirre de Mata J, Ezquerra-Canalejo A. Assessment of Tree Diameter Estimation Methods from Mobile Laser Scanning in a Historic Garden. Forests. 2021; 12(8):1013. https://doi.org/10.3390/f12081013

Chicago/Turabian Style

Pérez-Martín, Enrique, Serafín López-Cuervo Medina, Tomás Herrero-Tejedor, Miguel Angel Pérez-Souza, Julian Aguirre de Mata, and Alejandra Ezquerra-Canalejo. 2021. "Assessment of Tree Diameter Estimation Methods from Mobile Laser Scanning in a Historic Garden" Forests 12, no. 8: 1013. https://doi.org/10.3390/f12081013

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