[II-84] Study on discharge capacity evaluation of small-scale river using UAV photogrammetry
Keywords:UAV photogrammetry, river maintenance management, small-scale river, cross survey, discharge capacity, group of trees
The aim of this study is to calculate the discharge capacity using cross sections of small-scale rivers obtained by UAV photogrammetry, and to verify the accuracy of the method.UAV photography was carried out under variety conditions for a small-scale river. Then, the elevation and trees information of the ground surface were estimated using the 3-dimensional point cloud calculated by SfM from the obtained images, and the discharge capacity was evaluated by water level calculation. On the other hand, it was compared the accuracy of the discharge capacity with the conventional method using a total station.
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