Unmanned aerial vehicle (UAV) based mapping in engineering surveys: technical considerations for optimum results

Stella Pytharouli, Jock Souter, Olympia Tziavou

Research output: Contribution to conferenceAbstract

Abstract

Due to the wide availability of UAVs and their ease of use, the number of operators with limited surveying and photogrammetric knowledge is constantly increasing. At the same time, there are no easily accessible guidelines available regarding the choice of some of the parameters that greatly affect the quality of photos and consequently the orthomosaic obtained from a UAV e.g. overlap between photos, flight height, light conditions, specifications of the lens and camera, and weather conditions. As a result, if the user is not experienced or does not have a basic knowledge on surveying and photogrammetry (quite common considering the wide range of UAV user backgrounds), a poor quality orthomosaic is produced. This frequently leads to the misconception that a poor outcome is always due to limitations of the UAV technology. In this study, we discuss some of the main technical parameters, such as the effect of topography and UAV orientation on the overlap value, the camera calibration, number of control points and lighting conditions that need to be taken into account in order to utilize UAVs to their maximum potential.

Conference

Conference4th Joint International Symposium on Deformation Monitoring
CountryGreece
CityAthens
Period15/05/1917/05/19

Fingerprint

Unmanned aerial vehicles (UAV)
Surveying
Cameras
Photogrammetry
Topography
Lenses
Lighting
Availability
Calibration
Specifications

Keywords

  • UAV
  • fixed wing
  • VTOL
  • mapping
  • image resolution
  • engineering geological survey

Cite this

Pytharouli, S., Souter, J., & Tziavou, O. (2019). Unmanned aerial vehicle (UAV) based mapping in engineering surveys: technical considerations for optimum results. Abstract from 4th Joint International Symposium on Deformation Monitoring, Athens, Greece.
Pytharouli, Stella ; Souter, Jock ; Tziavou, Olympia. / Unmanned aerial vehicle (UAV) based mapping in engineering surveys : technical considerations for optimum results. Abstract from 4th Joint International Symposium on Deformation Monitoring, Athens, Greece.
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note = "4th Joint International Symposium on Deformation Monitoring ; Conference date: 15-05-2019 Through 17-05-2019",

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Pytharouli, S, Souter, J & Tziavou, O 2019, 'Unmanned aerial vehicle (UAV) based mapping in engineering surveys: technical considerations for optimum results' 4th Joint International Symposium on Deformation Monitoring, Athens, Greece, 15/05/19 - 17/05/19, .

Unmanned aerial vehicle (UAV) based mapping in engineering surveys : technical considerations for optimum results. / Pytharouli, Stella; Souter, Jock; Tziavou, Olympia.

2019. Abstract from 4th Joint International Symposium on Deformation Monitoring, Athens, Greece.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Unmanned aerial vehicle (UAV) based mapping in engineering surveys

T2 - technical considerations for optimum results

AU - Pytharouli, Stella

AU - Souter, Jock

AU - Tziavou, Olympia

PY - 2019/5/15

Y1 - 2019/5/15

N2 - Due to the wide availability of UAVs and their ease of use, the number of operators with limited surveying and photogrammetric knowledge is constantly increasing. At the same time, there are no easily accessible guidelines available regarding the choice of some of the parameters that greatly affect the quality of photos and consequently the orthomosaic obtained from a UAV e.g. overlap between photos, flight height, light conditions, specifications of the lens and camera, and weather conditions. As a result, if the user is not experienced or does not have a basic knowledge on surveying and photogrammetry (quite common considering the wide range of UAV user backgrounds), a poor quality orthomosaic is produced. This frequently leads to the misconception that a poor outcome is always due to limitations of the UAV technology. In this study, we discuss some of the main technical parameters, such as the effect of topography and UAV orientation on the overlap value, the camera calibration, number of control points and lighting conditions that need to be taken into account in order to utilize UAVs to their maximum potential.

AB - Due to the wide availability of UAVs and their ease of use, the number of operators with limited surveying and photogrammetric knowledge is constantly increasing. At the same time, there are no easily accessible guidelines available regarding the choice of some of the parameters that greatly affect the quality of photos and consequently the orthomosaic obtained from a UAV e.g. overlap between photos, flight height, light conditions, specifications of the lens and camera, and weather conditions. As a result, if the user is not experienced or does not have a basic knowledge on surveying and photogrammetry (quite common considering the wide range of UAV user backgrounds), a poor quality orthomosaic is produced. This frequently leads to the misconception that a poor outcome is always due to limitations of the UAV technology. In this study, we discuss some of the main technical parameters, such as the effect of topography and UAV orientation on the overlap value, the camera calibration, number of control points and lighting conditions that need to be taken into account in order to utilize UAVs to their maximum potential.

KW - UAV

KW - fixed wing

KW - VTOL

KW - mapping

KW - image resolution

KW - engineering geological survey

UR - http://jisdm2019.survey.ntua.gr/

M3 - Abstract

ER -

Pytharouli S, Souter J, Tziavou O. Unmanned aerial vehicle (UAV) based mapping in engineering surveys: technical considerations for optimum results. 2019. Abstract from 4th Joint International Symposium on Deformation Monitoring, Athens, Greece.