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Generation of Highly Accurate Digital Elevation Models with Unmanned Aerial Vehicles
Author(s) -
Reshetyuk Yuriy,
Mårtensson StigGöran
Publication year - 2016
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/phor.12143
Subject(s) - digital elevation model , terrain , elevation (ballistics) , photogrammetry , aerial survey , remote sensing , fixed wing , software , geology , computer science , geography , aerospace engineering , wing , engineering , cartography , structural engineering , programming language
In order to investigate the possibilities for the generation of digital elevation models with a height uncertainty of 20 mm or less using unmanned aerial vehicles, a survey with a fixed‐wing aircraft was carried out over a gravel quarry in Gävle, Sweden. At flying heights of about 80 and 160 m, the resulting imagery had ground sample distances of 24 and 50 mm, respectively. The data was processed in two different software suites – computer‐vision‐based PhotoScan and photogrammetric RapidStation/RapidTerrain. The results show that PhotoScan was more effective in flat terrain, with height uncertainties of 10 and 17 mm compared with 30 to 40 mm for RapidTerrain, whereas the latter had a clear advantage over undulating terrain.