Accuracy evaluation of consumer UAV tilt photogrammetry for spoil area monitoring

doi:10.13474/j.cnki.11-2246.2023.0324

Abstract

Abstract: UAV photogrammetry technology plays an important role in the monitoring of spoil ground.Consumer-grade drones have significant advantages of low threshold and low cost,but there are few studies on the accuracy analysis of photogrammetry using consumer-grade drones.In particular,the latest “specifications for office operation of low-altitude digital aerial photogrammetry” issued in 2021 has higher requirements for the accuracy of measurement.This paper takes the spoil ground of highway construction project as the research object,evaluates the accuracy of tilt photogrammetry using consumer-grade drones according to the image control points laid on the ground,and compares it with the traditional orthophoto grammetry.The test results show that the consumer-grade UAV can improve the measurement accuracy by 25.19%～ 90.68% through oblique photography,which is more significant in elevation.At the same time,the influence of large terrain drop on the measurement accuracy is reduced to centimeter level,which meets the mapping requirements of 1∶500 scale in the specification.The reliability and feasibility of consumer-grade UAV in the monitoring of spoil ground are proved.

Key words: consumer UAV, tilt photogrammetry, aerotriangulation, spoil area, accuracy evaluation

CLC Number:

P237

HU Jinru, LAI Linfeng, LU Zhiyuan, ZHANG Xiaofeng, LI Yuan, ZHAO Tingning, WEI Guangkuo. Accuracy evaluation of consumer UAV tilt photogrammetry for spoil area monitoring[J]. Bulletin of Surveying and Mapping, 2023, 0(11): 36-41.

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