Application of UAV-SfM topological modeling for tidal habitat evaluation

Abstract

 In this study, to evaluate two dimentional tidal surface habitat, elevation modeling via UAV-SfM mehod was carried out. Especially, the geometric accuracy of elevation models were verified comparing to the RTK-VRS elevation measurements. So as the SfM-derived elevation models are highly sensitive to the relative elevation differences, micro-topography was well modelled in detail. Standard deviations compared to the RTK-VRS elevations were 2.7cm to 5.2cm. Though the appropriate measurements of ground controle points (GCPs) were nessesary, the geometric accuracy of the UAV-SfM elevation model was adaptable to the evaluate tidal benthos habitat and sediment transportion.