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
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.