
Acquisition date: September 2021
Objective: Rooftop water basin and drone inspection
Level of details requested: Orthoimage 1cm resolution
Cost of project: 1 500$
Tools used:
- DJI phantom 4 pro drone
- Tersus bi-phase GPA (control points)

Softwares used:
- Autodesk 3D civil Autocad 2019 – Vectorization of point clouds
- Agisoft Metashape – Photogrammetry

Methodology used – workflow:
- Acquisition of control points using GPS
- Drone flight
- Data processing of drone images by autocorrelation with Agisoft
- Metashape software and creation of the orthoimage
- Orthoimage import into 3D civil Autocad and vectorization of the rooftop elements