ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume V-3-2020
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-3-2020, 19–24, 2020
https://doi.org/10.5194/isprs-annals-V-3-2020-19-2020
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-3-2020, 19–24, 2020
https://doi.org/10.5194/isprs-annals-V-3-2020-19-2020

  03 Aug 2020

03 Aug 2020

VOLUME MEASUREMENT OF SAND CARRIER USING UAV-BASED MAPPING

H. He1, X. Xu1, T. Chen2, and P. Lu3 H. He et al.
  • 1School of Geomatics, East China University of Technology, Nanchang 330013, China
  • 2School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China
  • 3School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

Keywords: Volume Measurement, Unmanned Aerial Vehicle (UAV), Point Cloud, Structure-from-Motion (SfM), Dense Matching

Abstract. To improve the operation efficiency and reduce the risks associated with exposing surveyors to danger during on-site operations, this paper presents a volume measurement approach of the sand carrier using unmanned aerial vehicle (UAV) imagery. Instead of the 3D surface interpolation of the sand carrier by total station measuring method or real-time kinematic global positioning system (RTK GPS) measuring method, the finely detailed surfaces of the sand carriers are reconstructed from dense point clouds derived by UAV-based mapping. Then, the volume of sand is calculated by the differential method, which multiplies the height difference between the UAV-derived 3D surfaces of the vessel and sand by the resolution of these surfaces. A total of 10 sand carriers are selected to test and evaluate the performance of the proposed approach, the absolute values of relative deviation between the volume obtained by UAV-based and the reference volume are approximately equal to 2%, which can be considered acceptable and satisfy the need of volume measurement of sand carriers. Compared with the manual field measurement and the laser scanning-based method, the proposed approach performs better in the accuracy of volume measurement or the reliability under the circumstance of a moving carrier. The overall results suggest that UAV-mapping can be used as an effective alternative to the commonly used method for volume measurement of the sand carrier.