RT info:eu-repo/semantics/article
T1 Using Unmanned Aerial Vehicles in Postfire Vegetation Survey Campaigns through Large and Heterogeneous Areas: Opportunities and Challenges
A1 Fernández Guisuraga, José Manuel
A1 Sanz Ablanedo, Enoc
A1 Suárez Seoane, Susana
A1 Calvo Galván, María Leonor
A2 Ecologia
K1 Ecología. Medio ambiente
K1 Drone
K1 Megafire
K1 Multispectral imagery
K1 Parrot SEQUOIA
K1 UAV
K1 WorldView-2
AB This study evaluated the opportunities and challenges of using drones to obtainmultispectral orthomosaics at ultra-high resolution that could be useful for monitoring large andheterogeneous burned areas. We conducted a survey using an octocopter equipped with a ParrotSEQUOIA multispectral camera in a 3000 ha framework located within the perimeter of a megafire inSpain. We assessed the quality of both the camera raw imagery and the multispectral orthomosaicobtained, as well as the required processing capability. Additionally, we compared the spatialinformation provided by the drone orthomosaic at ultra-high spatial resolution with another imageprovided by theWorldView-2 satellite at high spatial resolution. The drone raw imagery presentedsome anomalies, such as horizontal banding noise and non-homogeneous radiometry. Cameralocations showed a lack of synchrony of the single frequency GPS receiver. The georeferencing processbased on ground control points achieved an error lower than 30 cm in X-Y and lower than 55 cm in Z.The drone orthomosaic provided more information in terms of spatial variability in heterogeneousburned areas in comparison with theWorldView-2 satellite imagery. The drone orthomosaic couldconstitute a viable alternative for the evaluation of post-fire vegetation regeneration in large andheterogeneous burned areas
PB MDPI
YR 2018
FD 2018-03-15
LK http://hdl.handle.net/10612/7477
UL http://hdl.handle.net/10612/7477
NO Sensors, 2018, vol. 18, n. 2
NO 17 p.
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 01-may-2024