Inspection of a water tower by drone – cracks detection
Inspection by photogrammetry of the 4 faces of a water tower.
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.