期刊
PIA15+HRIGI15 - JOINT ISPRS CONFERENCE, VOL. II
卷 2-3, 期 W4, 页码 189-196出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/isprsannals-II-3-W4-189-2015
关键词
Quantitative structure models; automatic tree extraction; biomass; forest plot; ground truth; oak; eucalyptus; LiDAR
This paper presents a method for reconstructing automatically the quantitative structure model of every tree in a forest plot from terrestrial laser scanner data. A new feature is the automatic extraction of individual trees from the point cloud. The method is tested with a 30-m diameter English oak plot and a 80-m diameter Australian eucalyptus plot. For the oak plot the total biomass was overestimated by about 17 %, when compared to allometry (N = 15), and the modelling time was about 100 min with a laptop. For the eucalyptus plot the total biomass was overestimated by about 8.5 %, when compared to a destructive reference (N = 27), and the modelling time was about 160 min. The method provides accurate and fast tree modelling abilities for, e. g., biomass estimation and ground truth data for airborne measurements at a massive ground scale.
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