Application of uav imaging technology to river flood simulation
Journal
Journal of the Chinese Institute of Civil and Hydraulic Engineering
Journal Volume
27
Journal Issue
3
Pages
231-240
Date Issued
2015
Author(s)
Lai J.S
Chang W.Y
Liu Y.C
Kang S.C
Hsieh C.T
Huang C.C
Lee F.Z
Lin Y.T
Lin F
Chang R.Y
Wen M.Z.
Abstract
In recent years, unmanned aerial vehicle (UAV) has been widely used in many research fields. Compared to remote sensing technology, UAVs have advantages including easy setup, high mobility and low cost. The study area selected is located in the river reach between the Hawchung Bridge and the Haw Jung Bridge in the Sindian River which is one of the main tributaries of the Tamsui River. UAV, as a carrier, with imaging facilities is adopted in this study. Through image processing and analyzing technology, ground elevation and landscape can be obtained to construct the topographical data for the numerical model of river flood simulation. Technology of large scale particle image velocimetry is applied to analyze image information captured by the camera carried on UAV and to obtain observed velocity field for verifying the numerical model. The 2D hydrodynamic flow model is used to simulate various return-period flood cases and tidal flood-ebb flow conditions. The simulated and observed results are useful for flood disaster mitigation as well as the floodplain management. © 2015, Chinese Institute of Civil and Hydraulic Engineering. All right reserved.
Subjects
Flood disaster mitigation; Floodplain management; Imaging technology; UAV
SDGs
Other Subjects
Banks (bodies of water); Disasters; Flood control; Image analysis; Image processing; Imaging techniques; Numerical models; Remote sensing; Rivers; Unmanned aerial vehicles (UAV); Velocity; Velocity measurement; Flood disaster; Floodplain management; Ground elevation; Hydrodynamic flow models; Image information; Imaging technology; Particle image velocimetries; Remote sensing technology; Floods
Type
journal article