Inspection of a water tower by drone – cracks detection

Inspection by photogrammetry of the 4 faces of a water tower.

Results obtained from 1130 aerial images taken by the company AirCity Diagnostic.
Post processing by Drones Imaging.

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1130 aerial images and 9 GCPs made it possible to model the water tower in order to export 4 orthomosaics with a centimeter accuracy (SE, SW, NE et NW faces).

These geospatial datas were delivered in vector form (dense cloud) and raster (orthomosaics) compatible for a use with Autocad and in order to locate all the surface defects: concrete bursting, cracks and reinforcement rods.

  • Aerial images : AirCity Diagnostic.
  • Airborne platform: drone MK.
  • Camera: Sony A6000.
  • Height of the water tower : 76m.
  • Orthophotos : GSD 4mm.
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