Assessing the Accuracy of Digital Surface Models Derived from Optical Imagery Acquired with Unmanned Aerial Systems

Arranz Justel, José Juan and Manfreda, Salvatore and Dvořák, Petr and Mullerova, Jana and Herban, Sorin and Vuono, Pietro and Perks, Matthew (2019). Assessing the Accuracy of Digital Surface Models Derived from Optical Imagery Acquired with Unmanned Aerial Systems. "drones", v. 3 (n. 1); pp. 15-29. ISSN 2504-446X. https://doi.org/10.3390/drones3010015.

Description

Title: Assessing the Accuracy of Digital Surface Models Derived from Optical Imagery Acquired with Unmanned Aerial Systems
Author/s:
  • Arranz Justel, José Juan
  • Manfreda, Salvatore
  • Dvořák, Petr
  • Mullerova, Jana
  • Herban, Sorin
  • Vuono, Pietro
  • Perks, Matthew
Item Type: Article
Título de Revista/Publicación: drones
Date: 2019
ISSN: 2504-446X
Volume: 3
Subjects:
Freetext Keywords: topographic surveys; planar and vertical precision; unmanned aerial systems (UASs);digital surface models (DSMs)
Faculty: E.T.S.I. en Topografía, Geodesia y Cartografía (UPM)
Department: Ingeniería Cartográfica y Topografía
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (3MB) | Preview

Abstract

Small unmanned aerial systems (UASs) equipped with an optical camera are a cost-effective strategy for topographic surveys. These low-cost UASs can provide useful information for three-dimensional (3D) reconstruction even if they are equipped with a low-quality navigation system. To ensure the production of high-quality topographic models, careful consideration of the flight mode and proper distribution of ground control points are required. To this end, a commercial UAS was adopted to monitor a small earthen dam using different combinations of flight configurations and by adopting a variable number of ground control points (GCPs). The results highlight that optimization of both the choice and combination of flight plans can reduce the relative error of the 3D model to within two meters without the need to include GCPs. However, the use of GCPs greatly improved the quality of the topographic survey, reducing error to the order of a few centimeters. The combined use of images extracted from two flights, one with a camera mounted at nadir and the second with a 20° angle, was found to be beneficial for increasing the overall accuracy of the 3D model and especially the vertical precision.

More information

Item ID: 62477
DC Identifier: http://oa.upm.es/62477/
OAI Identifier: oai:oa.upm.es:62477
DOI: 10.3390/drones3010015
Official URL: https://www.mdpi.com/2504-446X/3/1/15
Deposited by: Memoria Investigacion
Deposited on: 21 Apr 2020 07:43
Last Modified: 21 Apr 2020 07:43
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM