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Open AccessFeature PaperArticle

Use of UAV-Photogrammetry for Quasi-Vertical Wall Surveying

Department of Engineering, University of Almería (Agrifood Campus of International Excellence, ceiA3), La Cañada de San Urbano, s/n, 04120 Almería, Spain
Peripheral Service of Research and Development Based on Drones, University of Almeria, La Cañada de San Urbano, s/n, 04120 Almería, Spain
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(14), 2221;
Received: 8 June 2020 / Revised: 30 June 2020 / Accepted: 9 July 2020 / Published: 10 July 2020
(This article belongs to the Special Issue UAV Photogrammetry and Remote Sensing)
In this study, an analysis of the capabilities of unmanned aerial vehicle (UAV) photogrammetry to obtain point clouds from areas with a near-vertical inclination was carried out. For this purpose, 18 different combinations were proposed, varying the number of ground control points (GCPs), the adequacy (or not) of the distribution of GCPs, and the orientation of the photographs (nadir and oblique). The results have shown that under certain conditions, the accuracy achieved was similar to those obtained by a terrestrial laser scanner (TLS). For this reason, it is necessary to increase the number of GCPs as much as possible in order to cover a whole study area. In the event that this is not possible, the inclusion of oblique photography ostensibly improves results; therefore, it is always advisable since they also improve the geometric descriptions of break lines or sudden changes in slope. In this sense, UAVs seem to be a more economic substitute compared to TLS for vertical wall surveying. View Full-Text
Keywords: UAV; photogrammetry; 3D-model; surveying; vertical wall UAV; photogrammetry; 3D-model; surveying; vertical wall
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MDPI and ACS Style

Martínez-Carricondo, P.; Agüera-Vega, F.; Carvajal-Ramírez, F. Use of UAV-Photogrammetry for Quasi-Vertical Wall Surveying. Remote Sens. 2020, 12, 2221.

AMA Style

Martínez-Carricondo P, Agüera-Vega F, Carvajal-Ramírez F. Use of UAV-Photogrammetry for Quasi-Vertical Wall Surveying. Remote Sensing. 2020; 12(14):2221.

Chicago/Turabian Style

Martínez-Carricondo, Patricio; Agüera-Vega, Francisco; Carvajal-Ramírez, Fernando. 2020. "Use of UAV-Photogrammetry for Quasi-Vertical Wall Surveying" Remote Sens. 12, no. 14: 2221.

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