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Orthophotos and DSMs/DTM derived from RPAS flights over the nature reserve Landschap De Liereman in Flanders, Belgium
Citation
Vanden Borre, Jeroen, Klaas Pauly, Van Hoey, Stijn, De Reu, Jeroen, & Desmet, Peter. (2019). Orthophotos and DSMs/DTM derived from RPAS flights over the nature reserve Landschap De Liereman in Flanders, Belgium [Data set]. Zenodo. https://doi.org/10.5281/zenodo.3063334

Availability: CC0 To the extent possible under law, the person who associated CC0 with this dataset has waived all copyright and related or neighboring rights to this dataset.

Description
Data were collected by the Research Institute for Nature and Forest (INBO) with a fixed wing drone Gatewing X100 in 2015 (7 flights). RGB data were acquired using an off-the-shelf Ricoh GR Digital IV camera, with the following image bands: 1: red, 2: green, 3: blue, 4: alpha channel. An additional flight campaign was commissioned by INBO and carried out by the Flemish Institute for Technological Research (VITO) in 2017 with a fixed wing drone SenseFly eBee. Multispectral data were acquired using a Parrot Sequoia camera, with the following image bands: 1: green, 2: red, 3: red edge, 4: NIR, 5: alpha channel. with a Parrot Sequoia camera. Raw data for this flight campaign are not available. more

Study area: Landschap De Liereman is a nature reserve situated in Oud-Turnhout, in the province of Antwerp, Flanders, Belgium. The area is managed by the nature conservation NGO Natuurpunt and consists of a diverse landscape of wet and dry heathlands, Nardus grasslands on siliceous soils, forests and transition mires, as well as some remaining arable fields and high-intensity agricultural grasslands.


Data processing: The raw data were processed to Digital Surface Models and orthophotos by VITO in 2017. For the 2017 campaign by VITO, the outputs also include a Digital Terrain Model (DTM). Images with coarse GPS coordinates were imported and processed in Agisoft PhotoScan Pro 1.4.x, a structure-from-motion (SfM) based photogrammetry software program. After extraction and matching of tie points, a bundle adjustment leads to a sparse point cloud and a refined set of camera position and orientation values. From there, a point cloud densification and classification into ground and non-ground points was performed, leading to a rasterized digital surface model (DSM) and digital terrain model (DTM). Finally, a true orthomosaic was projected onto the DTM.


Coordinate reference system: All geospatial data have the coordinate reference system EPSG:31370 - Belgian Lambert 72.


The DOI in the citation represents all versions. To find the DOI of the different versions, go to the Zenodo record.


Scope
Themes:
Physical > Optical measurements
Keywords:
Fresh water, Terrestrial, Drone aircraft, Environment management, Modelling, Orthophotos, Remote sensing, Unmanned aircraft

Temporal coverage
2015 - 2017

Parameter
RGB (Red, Green, Blue) colour component means and percentiles

Contributors
Vlaamse overheid; Beleidsdomein Economie, Wetenschap en Innovatie; Vlaamse Instelling voor Technologisch Onderzoek (VITO), moredata creator
Vlaamse overheid; Beleidsdomein Omgeving; Instituut voor Natuur- en Bosonderzoek (INBO), moredata creatordata manager

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2021-12-07
Information last updated: 2021-12-07
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy