Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean Coast
In the past few years, unmanned aerial systems (UAS) have achieved great popularity for civil uses. One of the present main uses of these devices is low-cost aerial photogrammetry, being especially useful in coastal environments. In this work, a high-resolution 3D model of a beach section in Guardam...
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doaj-741ac8ae9f56488d81e326bbfcf904722021-04-02T04:47:14ZengMDPI AGJournal of Marine Science and Engineering2077-13122019-08-017929710.3390/jmse7090297jmse7090297Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean CoastLuis Bañón0José Ignacio Pagán1Isabel López2Carlos Banon3Luis Aragonés4Department of Civil Engineering, University of Alicante, Ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, SpainDepartment of Civil Engineering, University of Alicante, Ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, SpainDepartment of Civil Engineering, University of Alicante, Ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, SpainAIRLAB, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, SingaporeDepartment of Civil Engineering, University of Alicante, Ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, SpainIn the past few years, unmanned aerial systems (UAS) have achieved great popularity for civil uses. One of the present main uses of these devices is low-cost aerial photogrammetry, being especially useful in coastal environments. In this work, a high-resolution 3D model of a beach section in Guardamar del Segura (Spain) has been produced by employing a low maximum takeoff mass (MTOM) UAS, in combination with the use of structure-from-motion (SfM) techniques. An unprecedented extensive global navigation satellite system (GNSS) survey was simultaneously carried out to statistically validate the model by employing 1238 control points for that purpose. The results show good accuracy, obtaining a vertical root mean square error (RMSE) mean value of 0.121 m and a high point density, close to 30 pt/m<sup>2</sup>, with similar or even higher quality than most coastal surveys performed with classical techniques. UAS technology permits the acquisition of topographic data with low time-consuming surveys at a high temporal frequency. Coastal managers can implement this methodology into their workflow to study the evolution of complex, highly anthropized dune-beach systems such as the one presented in this study, obtaining more accurate surveys at lower costs.https://www.mdpi.com/2077-1312/7/9/297UASGNSScoastal environmentvalidationDSMdune systemssurvey3D point cloudSfM |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Luis Bañón José Ignacio Pagán Isabel López Carlos Banon Luis Aragonés |
spellingShingle |
Luis Bañón José Ignacio Pagán Isabel López Carlos Banon Luis Aragonés Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean Coast Journal of Marine Science and Engineering UAS GNSS coastal environment validation DSM dune systems survey 3D point cloud SfM |
author_facet |
Luis Bañón José Ignacio Pagán Isabel López Carlos Banon Luis Aragonés |
author_sort |
Luis Bañón |
title |
Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean Coast |
title_short |
Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean Coast |
title_full |
Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean Coast |
title_fullStr |
Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean Coast |
title_full_unstemmed |
Validating UAS-Based Photogrammetry with Traditional Topographic Methods for Surveying Dune Ecosystems in the Spanish Mediterranean Coast |
title_sort |
validating uas-based photogrammetry with traditional topographic methods for surveying dune ecosystems in the spanish mediterranean coast |
publisher |
MDPI AG |
series |
Journal of Marine Science and Engineering |
issn |
2077-1312 |
publishDate |
2019-08-01 |
description |
In the past few years, unmanned aerial systems (UAS) have achieved great popularity for civil uses. One of the present main uses of these devices is low-cost aerial photogrammetry, being especially useful in coastal environments. In this work, a high-resolution 3D model of a beach section in Guardamar del Segura (Spain) has been produced by employing a low maximum takeoff mass (MTOM) UAS, in combination with the use of structure-from-motion (SfM) techniques. An unprecedented extensive global navigation satellite system (GNSS) survey was simultaneously carried out to statistically validate the model by employing 1238 control points for that purpose. The results show good accuracy, obtaining a vertical root mean square error (RMSE) mean value of 0.121 m and a high point density, close to 30 pt/m<sup>2</sup>, with similar or even higher quality than most coastal surveys performed with classical techniques. UAS technology permits the acquisition of topographic data with low time-consuming surveys at a high temporal frequency. Coastal managers can implement this methodology into their workflow to study the evolution of complex, highly anthropized dune-beach systems such as the one presented in this study, obtaining more accurate surveys at lower costs. |
topic |
UAS GNSS coastal environment validation DSM dune systems survey 3D point cloud SfM |
url |
https://www.mdpi.com/2077-1312/7/9/297 |
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