Integration of data obtained from laser scanning and UAV used to develop a 3D model of the building object
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University of Agriculture in Krakow, Faculty of Environmental Engineering and Land Surveying, Al. Mickiewicza 21, 31-120 Krakow, Poland
RemoteCraftsmen Krakow, ul. Opolska 12, Krakow, Poland
Submission date: 2022-03-25
Acceptance date: 2022-03-29
Publication date: 2022-12-30
Archives of Civil Engineering 2022;68(4):311-330
Currently, the possibilities offered by measurement techniques allow development of both cities in the form of 3D models as well as models of small and large architecture objects. Depending on the needs, the scale of an examined object or the intended use of the final product, geodesy finds readymade measurement methods. If one wants to work out a 3D model of a building object in detail, the most accurate way is to use laser scanning technology. However, there are situations in which limitations resulting from the terrain layout or the structure of the building preclude to obtain full information about its shape. In such situations, the solution is to integrate data from various measurement devices. If creating a full 3D model of large buildings, the best choice to complete data, especially the roof of the object, is to use an unmanned aerial platform, because the resolution of images made on a low altitude is good enough to obtain a satisfactory effect in the form of a point cloud. The research used integration of data obtained at low altitude from two unmanned aerial vehicles, Fly-Tech DJI S1000 and DJI Phantom 3 Advanced – using various types of missions – with data recorded with the Leica ScanStation P40 terrestrial laser scanner. The data was integrated by giving them a common coordinate system – in this case the 2000 system, for the grid points measured in the field with the GNSS technique, and the use of Cyclone, Metashape and Pix4D software for this purpose. Combined point clouds were used for 3D modelling of the sacred object with Bentley CAD software. The accuracy with which data integration was performed and errors resulting from the use of various measurement techniques were determined. The result of the study is a 3D model of the Church of Our Lady of Consolation, located in Krakow at the Sportowe estate.
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