A GIS-based algorithm to generate a Lidar pit-free canopy height model
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2020-06-25 13:55
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Geodezie. Topografie. Fotogrametrie. Cartografie (112)
Silvicultură (331)
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MARCU, Casiana, STATESCU, Florian, IURIST (DUMITRAȘCU), Nicoleta. A GIS-based algorithm to generate a Lidar pit-free canopy height model. In: Present Environment and Sustainable Development , 2017, nr. 2, pp. 89-95. ISSN 1843-5971. DOI: https://doi.org/10.1515/pesd-2017-0027
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Present Environment and Sustainable Development
Numărul 2 / 2017 / ISSN 1843-5971 /ISSNe 2284-7820

A GIS-based algorithm to generate a Lidar pit-free canopy height model

DOI:https://doi.org/10.1515/pesd-2017-0027
CZU: 528.8:630

Pag. 89-95

Marcu Casiana, Statescu Florian, Iurist (Dumitrașcu) Nicoleta
 
Gheorghe Asachi Technical University of Iasi
 
 
Disponibil în IBN: 7 iunie 2020


Rezumat

Lidar has provided significant benefits for forest development and engineering operations and provides a good means to collect information on forest stands. A common analysis using LiDAR data computes the CHM as a difference between DSM and DTM, create a DTM from the ground returns and a DSM from the first returns and subtract the two rasters, but how exactly are generated the DTM and the DSM. Irregular height variations, called data pits are present in the CHM and appear when the first Lidar return is far below the canopy. The purpose of this study is an approach that computes the CHM directly from height-normalized LiDAR points.

Cuvinte-cheie
GIS, LiDAR, CHM, LAStools, “pit-free”