Research on Slope Deformation Monitoring Based on UAV Photogrammetry
Slope monitoring is one of the important means to guide slope stability analysis.In response to the draw-backs of traditional routes in slope collection such as inconsistent overlap and low accuracy,a fine model route suit-able for regular slopes is studied.By this route,the average ground resolution of the 3D model of the experimental slope can reach the millimeter level,and gaps on the slope can be clearly distinguished and measured.Experimental results show that millimeter-level gaps can be intuitively observed on the slope model,and that by comparing the measuring width of several gaps on the model with actual measurement results,the length error of less than or equal to 1 mm accounts for 83.3%,and the average error of gap width measurement is 0.95 mm,indicating high measure-ment accuracy.DEM overlay analysis can reflect the overall changes of the slope surface,which is a beneficial supplement to traditional monitoring methods.
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