Comparing Terrestrial Laser Scanning (TLS) and Wearable Laser Scanning (WLS) for Individual Tree Modeling at Plot Level

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Comparing Terrestrial Laser Scanning (TLS) and Wearable Laser Scanning (WLS) for Individual Tree Modeling at Plot Level

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Title: Comparing Terrestrial Laser Scanning (TLS) and Wearable Laser Scanning (WLS) for Individual Tree Modeling at Plot Level
Author: Cabo, Carlos;Del pozo, Susana;Rodríguez-Gonzálvez, Pablo;Ordoñez, Celestino;González-Aguilera, Diego
xmlui.dri2xhtml.METS-1.0.item-contributor: Escuela Superior y Tecnica de Ingenieros de Minas
xmlui.dri2xhtml.METS-1.0.item-area: Ingeniería Cartografica, Geodesica y Fotogrametria
Abstract: This study presents a comparison between the use of wearable laser scanning (WLS) and terrestrial laser scanning (TLS) devices for automatic tree detection with an estimation of two dendrometric variables: diameter at breast height (DBH) and total tree height (TH). Operative processes for data collection and automatic forest inventory are described in detail. The approach used is based on the clustering of points belonging to each individual tree, the isolation of the trunks, the iterative fitting of circles for the DBH calculation and the computation of the TH of each tree. TLS and WLS point clouds were compared by the statistical analysis of both estimated forest dendrometric parameters and the possible presence of bias. Results show that the apparent differences in point density and relative precision between both 3D forest models do not affect tree detection and DBH estimation. Nevertheless, tree height estimation using WLS appears to be affected by the limited scanning range of the WLS used in this study. TH estimations for trees below a certain height are equivalent using WLS or TLS, whereas TH of taller trees is clearly underestimated using WLS
xmlui.dri2xhtml.METS-1.0.item-desfisica: 54 p.
xmlui.dri2xhtml.METS-1.0.item-peerreviewed: SI
Publisher: MDPI
xmlui.dri2xhtml.METS-1.0.item-citation: Remote Sensing 2018, 10, 540
URI: http://hdl.handle.net/10612/9243
Date: 2018-04-01
xmlui.dri2xhtml.METS-1.0.item-tipo: info:eu-repo/semantics/article
Subject: Cartografía
xmlui.dri2xhtml.METS-1.0.item-palclave: Forest inventory
Tree modeling
Laser scanning
Mobile mapping
Dendrometric variables
xmlui.dri2xhtml.METS-1.0.item-accessRights: info:eu-repo/semantics/openAccess
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