Application of UAV Tilt Photogrammetry Technology in Landslide Risk Perception
In order to strengthen the landslide risk perception ability of power engineering in steep and dangerous areas,a land-slide risk perception method is designed based on UAV tilt photogrammetry technology.It calculates the risk probability of evaluation factors,sets up the risk grade evaluation model of landslide disaster,and divides the risk grade of landslide disaster.It corrects the tilt photography parameters of UAV,designs the landslide risk perception photography process,and identifies the tilt photogrammetry results of UAV.It analyzes the impact of four evaluation factors on landslide in steep terrain and dan-gerous area,include slope,vegetation coverage,road distance and river distance,and comprehensively evaluates the landslide risk in the study area by using the spatial analysis function of ArcGIS software.The experimental results show that the design method can effectively perceive the landslide risk and divide the risk into low risk area,medium risk area,high risk area and ex-tremely risk area.