Joint use of UAV technologies and terrestrial laser scanning for creation of object-oriented virtual models

http://doi.org/10.35595/2414-9179-2019-1-25-398-413

View or download the article (Rus)

About the Authors

Ilya A. Rylskiy

Lomonosov Moscow State University,
Leninskie Gory, 1, 119991, Moscow, Russia,
E-mail: rilskiy@mail.ru

Dmitriy A. Paramonov

Lomonosov Moscow State University,
Leninskie Gory, 1, 119991, Moscow, Russia,

Marina S. Malevannaya

Lomonosov Moscow State University,
Leninskie Gory, 1, 119991, Moscow, Russia,

Abstract

Virtual modeling of cities is very demanded task now. Though the technologies developed greatly during last years, there are a lot of difficulties and many different approaches for achieving goals. In nowadays there are different new technologies, that offer great flexibility and enormous volumes of spatial data—UAV imagery, satellite imagery, laser scanning, GNSS, etc. Our team is focused on development of virtual city model production using following approaches: the virtual model should be organized as a stand-alone software solution; following spatial data sources should be used:

  • UAV making nadir and oblique imagery for getting textures, production of orthomosaics and building 3D surfaces;
  • terrestrial laser scanning—for small, but important objects, big vertical constructions and rough terrain;
  • GNSS measurements are performed during surveys (using base stations and kinematic measurements) and after them (ground control points, check points, etc.)
Buildings and constructions are treated as separated objects linked to the database (address, coordinates, geocoding, points of interest, etc.) and hyperlinks (documents, floor plans, charts, additional models, images, scans, etc.). All artificial objects (buildings, constructions) are OBJ files (low-polygonal geometry built semy-automatic using survey data with artificially controlled edges and faces, no MESH allowed) and are mapped automatically using nadir and oblique imagery. Terrestrial laser scanning data (georeferenced point cloud) is used as a source of ground control points for UAV data, for modeling very complex facilities and for mapping complex city landscape where a lot of poles, wires and metal constructions can occur. All information is georeferenced with high accuracy, equal to 1:200–1:500 scale.

These approaches allow us to eliminate the disadvantages of different mapping methods, getting better results with less efforts.

Keywords

object-oriented virtual model, terrestrial laser scanning, lidar, aerial imagery, oblique images, UAV, GIS, 3D objects, cartography, sustainable development.

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For citation: Rylskiy I.A., Paramonov D.A., Malevannaya M.S. Joint use of UAV technologies and terrestrial laser scanning for creation of object-oriented virtual models InterCarto. InterGIS. GI support of sustainable development of territories: Proceedings of the International conference. Moscow: Moscow University Press, 2019. V. 25. Part 1. P. 398–413. DOI: 10.35595/2414-9179-2019-1-25-398-413