ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume V-1-2022
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-1-2022, 33–40, 2022
https://doi.org/10.5194/isprs-annals-V-1-2022-33-2022
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-1-2022, 33–40, 2022
https://doi.org/10.5194/isprs-annals-V-1-2022-33-2022
 
17 May 2022
17 May 2022

AN OBJECT-ORIENTED UAV 3D PATH PLANNING METHOD APPLIED IN CULTURAL HERITAGE DOCUMENTATION

X. Liu1, Z. Ji1, H. Zhou1, Z. Zhang1, P. Tao1, K. Xi1, L. Chen1, and J. Marcato Junior2 X. Liu et al.
  • 1School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
  • 2Faculty of Engineering, Architecture and Urbanism and Geography, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil

Keywords: UAV, Path planning, Cultural heritage, Object-oriented, Structure line

Abstract. Since image-based 3D model reconstruction can faithfully recover the real texture of cultural heritage with high accuracy, it is widely used in cultural heritage documentation. Given the complexity of manual image acquisition at present, we propose an object-oriented unmanned aerial vehicle (UAV) path planning method to obtain close-up and high-resolution images for the 3D reconstruction of cultural heritage. Four basic geometric classes are defined and can be automatically divided or interactively defined on the surface of an initial coarse model. We propose the concept of aerial strip unit in conventional photogrammetry to generate multiple regular strip units for photography. The optimal flight path connecting each unit is generated considering the obstacle avoidance and the shortest distance. Based on the self-developed 3D engine, we take the Ancient City of Ping Yao and Yellow Crane Tower in China as two cases to design the UAV 3D path planning. Experimental results show that, compared with general planning methods, our method can improve the flight efficiency of UAV and the visual fineness of the reconstruction results.