Testing the potential of UAV photogrammetry for deriving bare earth models in Arctic shrublands / R.H. Fraser, T.C. Lantz, M. McFarlane-Winchester, J. van der Sluijs, and C. Prévost. : M103-3/54-2020E-PDF
"We conducted an experiment to test the potential of UAV-based surveying and photogrammetry to delineate a "bare earth" surface or digital terrain model (DTM) in dense Arctic shrublands. High overlap (86%/80%) UAV photo surveys captured at two resolutions (5.5 mm and 22 mm) were processed into dense point clouds using a conventional structure from motion workflow. DTMs were derived from the point clouds by triangulating the lowest points within 1 meter windows and resampling to a 1 cm raster grid. Mean absolute vertical error of the DTM, assessed using 90 ground elevations surveyed in the field, was 5.4 cm for the 5.5 mm survey and 8.3 cm for the 22 mm survey. Larger errors for the coarser 22 mm survey were due to poorer point cloud modeling of ground surface features within the gaps of denser shrub canopy"--Summary, page 5.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.893906&sl=1
| Ministère/Organisme | Geomatics Canada, issuing body. |
|---|---|
| Titre | Testing the potential of UAV photogrammetry for deriving bare earth models in Arctic shrublands / R.H. Fraser, T.C. Lantz, M. McFarlane-Winchester, J. van der Sluijs, and C. Prévost. |
| Titre de la série | Open file ; 54 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Includes bibliographical references (pages 18-20). |
| Information sur la publication | [Ottawa] : Geomatics Canada, 2020. ©2020 |
| Auteur / Contributeur | Fraser, Robert H., author. |
| Description | 1 online resource (20 pages) : illustrations (some colour), colour map. |
| Numéro de catalogue |
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| Numéro de catalogue du ministère | 321447 |
| Descripteurs | Drone aircraft in remote sensing -- Northwest Territories. Digital elevation models -- Northwest Territories. Télédétection par drone -- Territoires du Nord-Ouest. Modèles numériques de terrain -- Territoires du Nord-Ouest. |
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