Reconstruction of a digital elevation model in a lab-scale urban drainage facility applying LiDAR and SfM techniques

  1. Regueiro Picallo, Manuel 1
  2. Sañudo, Esteban 1
  3. Cea, Luis 1
  4. Puertas, Jerónimo 1
  1. 1 Universidade da Coruña
    info

    Universidade da Coruña

    La Coruña, España

    ROR https://ror.org/01qckj285

Actas:
2nd IAHR Young Professionals Congress

Editorial: International Association for Hydro-Environment Engineering and Research (IAHR)

ISBN: 978-90-824846-7-0

Año de publicación: 2021

Tipo: Aportación congreso

DOI: 10.5281/ZENODO.10697644 GOOGLE SCHOLAR lock_openAcceso abierto editor

Resumen

The use of visualization techniques for obtaining elevation maps with simple and relatively low-cost procedures, apart from conventional topographic methods, is widespread. In the field of urban drainage systems, numerical models require greater grid detail to solve complex hydraulic problems. This study presents the use of Structure from Motion (SfM) and Light Detection And Ranging (LiDAR) techniques to obtain the roof and pavement elevations of an urban drainage experimental module. The digital reconstructions obtained are both satisfactory, in terms of the detail of the elements, and similar between each other, with a mean vertical error for both surfacesless than 2 mm. The main discrepancies between both procedures lie in collecting and processing point clouds and meshes.