Photographic partitioning method and device for unmanned aerial vehicle photogrammetry for expressway

The invention relates to the technical field of expressway design and construction, and discloses an expressway-oriented unmanned aerial vehicle photogrammetry photography zoning method and device, and the method comprises the steps: taking highway mileage points closest to the maximum value and minimum value of the local elevation of an expressway center line as route zoning points according to wave troughs and wave crests; dividing is continued according to whether the linear distance from each highway mileage point to the adjacent route partition point exceeds a threshold value, and then dividing is carried out according to whether the elevation change value of the two adjacent route partition points exceeds the relative flight height of the unmanned aerial vehicle; and finally, according to whether the distance between two adjacent route partition points exceeds the maximum voyage division of the unmanned aerial vehicle, accurate planning of the unmanned aerial vehicle route considering the DEM is realize