Reconstruction of high-precision real 3D data of offshore islands based on drone tilt photography and laser scanning

doi:10.13474/j.cnki.11-2246.2024.0305

Abstract

Abstract: This paper addresses the needs and technical challenges of real 3D for offshore islands, taking the Miaowan Island in Zhuhai, China as the observation object, using UAV oblique photogrammetry and laser scanning for real 3D data acquisition of offshore islands. Details of the UAV mission planning, ground control and live 3D data processing work, and DEM generation based on parameter-free cloth simulation filtering are presented. The absolute accuracy of the data is verified by checkpoints. The results show that the total mean square error of the acquired ortho-and oblique images are 14.72 and 6.60cm,respectively; the errors of the point cloud, DSM and DEM elevations are 3.10, 6.20 and 7.11cm,respectively, which meet the needs of offshore island live 3D display and survey management.

Key words: offshore islands, real 3D, unmanned aerial vehicles, photogrammetry, LiDAR, ground filtering

CLC Number:

P237

ZHANG Shuhang, LI Wangmin, PANG Yinning, CHANG Bingtao, MA Defu, LI Xiulong, ZHANG Wuming. Reconstruction of high-precision real 3D data of offshore islands based on drone tilt photography and laser scanning[J]. Bulletin of Surveying and Mapping, 2024, 0(3): 25-30.

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