Research on the Production of Orthophoto Maps Based on UVA Images
Aerial Photogrammetry is an important technological means for quickly obtaining geographic informa-tion in contemporary times.Traditional measurement methods obtain geographic data information through measur-ing instruments such as total stations,levels,theodolites,and Global Positioning System(GPS).However,these methods have the disadvantages of long production cycles,cumbersome work steps,high environmental factors,high personnel demand,and high cost.Taking the measurement of the Aha Lake Reservoir area in Guiyang City as the engineering background,this paper explores the production of orthophoto maps based on unmanned aerial ve-hicle(UVA)aerial photogrammetry.The accuracy verification shows that the maximum point mean square error is 0.563,and the average point mean square error is 0.420,which meets the precision requirement of 0.6 m in flat ground position.
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