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 Combining double low line 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 Combining double low line 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.
Raumonen, P., Casella, E., Calders, K., Murphy, S., Åkerblom, M., & Kaasalainen, M. (2015). Massive-scale tree modelling from TLS data. In ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences (Vol. 2, pp. 189–196). Copernicus GmbH. https://doi.org/10.5194/isprsannals-II-3-W4-189-2015