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  • Drones imaging
    • Who are we
  • images processing service
    • topographic service
    • thermographic service
    • agricultural service
    • automatic counting service
    • Use case
    • Product sheets
    • useful documentation
    • download guide
  • Trainings
    • training in photogrammetry metashape option
    • training in photogrammetry Pix4D option
    • Multispectral training
    • online photogrammetry training
  • Softwares
    • Agisoft Metashape photogrammetry software
    • Undet software
  • RTK Receivers
    • EMLID GNSS RTK Reach RS3
    • EMLID GNSS RTK Reach RS2+
    • Emlid GNSS RTK Reach RX
    • EMLID GNSS RTK Reach RS+
  • Sensors
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  3. Inspection of a water tower by drone & cracks detection

Inspection of a water tower by drone & cracks detection

  • June 21, 2017
  • 8:30 pm

Drone inspection & cracks detection onto the walls of a water tower

Drone inspection and photogrammetry: results obtained from 1130 aerial shots taken by the company AirCity Diagnostic. Aerial images analysis and processing service by Drones Imaging.

Drone inspection of the circular wall of a water tower

Inspection par drone

1130 aerial shots and 9 Ground Control Points (GCPs) recorded with a GNSS RTK receiver made it possible to 3D model the entire water tower in order to export 4 orthomosaics (SE, SW, NE and NW faces) with centimeter accuracy and milimeter resolution.

Digital productions thus built were delivered in vector (dense cloud) and raster (orthomosaic) form for immediate use with Autocad in order to locate all surface defects: concrete bursting, calcite, cracks, visible reinforcement and traces of rust.

TECHNICAL INFORMATIONS

  • Aerial imagery analysis & processing service : Drones Imaging company.
  • Flights and aerial imagery captation : Air City Diagnostic company.
  • Spatial accuracy : centimeter with GNSS RTK receiver.
  • Orthophoto RVB : GSD 4 mm.
  • Height of the water tower : 76m.
  • Drone : MikroKopter.
  • Camera : SONY A6000
  • Photogrammetry software : Metashape
  • Export formats : GeoTiff, Las and Dwg autocad.
  • Delivery delays : 4 days.
  • Use case taught during our Agisoft Metashape training : see more.
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