Bulletin of Surveying and Mapping ›› 2022, Vol. 0 ›› Issue (8): 139-142,159.doi: 10.13474/j.cnki.11-2246.2022.0246

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Earthwork calculation and accuracy evaluation of UAV oblique photogrammetry

WANG Cheng1,2, SHI Yujun3, QUAN Fei2, LI Qingxun4, LI Jiahao2, ZHOU Lü2   

  1. 1. Guangxi Institute of Natural Resources Survey and Monitoring, Nanning 530023, China;
    2. Guilin University of Technology, Guilin 541004, China;
    3. Guangxi Deep Space Sail Engineering Survey and Design Co., Ltd., Nanning 530028, China;
    4. Shenzhen Water Planning and Design Institute Co., Ltd., Shenzhen 518001, China
  • Received:2022-04-18 Revised:2022-06-17 Published:2022-09-01

Abstract: In this article, Guangxi Xing’an survey area is taken as the study area, and 1031 tilt images and 3361 ground discrete points were obtained with unmanned aerial vehicle(UAV) and GNSS-RTK respectively. The ContextCapture software is used to construct the 3D model of the survey area. The elevation points of the 3D model of the survey area and the measured discrete points of GNSS-RTK are extracted by EPS to calculate the DTM earthwork volume. Assuming that the calculated results of the measured discrete points are the true values, the results show that the difference between the measured results and the true values of the UAV earthwork volume is 1050.9m3, and the error percentage is 0.9%. UAV oblique photogrammetry technology can quickly, low cost, high quality to complete the measurement of earthwork and provide accurate results and scientific data support for engineering projects.

Key words: UAV, oblique photography, earthwork volume, 3D modeling, accuracy analysis

CLC Number: