Structure Measurement with Drones
Compared with traditional methods, drone capture covers larger areas faster and dramatically shortens field time. Thanks to the RTK GNSS system the data is georeferenced with high accuracy, reducing the need for large numbers of ground control points. The high-resolution wide-angle camera captures images at a low GSD (Ground Sampling Distance), ensuring a high level of detail during processing. At standard flight altitudes a resolution of roughly 1–3 cm/pixel is achievable, depending on flight height and mission configuration. Photogrammetric capture enables the creation of:
- orthophoto plans,
- digital terrain models (DTM),
- digital surface models (DSM),
- dense point clouds,
- 3D mesh models,
- textured models of objects and infrastructure.
Webinar content:
Photogrammetry and measurement with drones
Object measurement in practice
Choosing drones by flight category
Software and data processing
Open and specific flight categories
Real company use case
Investment tier
Rules, regulation and CAA legislation
RTK positioning and measurement accuracy
Mission automation with DJI Dock 3
DJI Matrice 4E Specifications:
| Širokokotna kamera za fotogrametrijo | |
|---|---|
|
Wide-angle photogrammetry camera |
CMOS ~20 MP, mechanical or electronic shutter, RAW support (DNG/JPEG), video up to 4K, GSD ~1–3 cm/pix at standard flight altitudes |
|
RTK GNSS system |
GPS+GLONASS+Galileo+BeiDou, horizontal accuracy ~1–2 cm, vertical ~2–3 cm, NTRIP/PPK support |
|
Automated mission planning |
Waypoint/grid/corridor mapping, overlap 70–90 %, terrain-follow support |
|
Photogrammetric outputs |
Creation of orthophoto plans, point clouds, mesh models and DTM/DSM models |
|
Georeferenced data |
Export GeoTIFF, LAS, OBJ, DXF, CSV and compatibility with Pix4D, DJI Terra, Agisoft Metashape and BIM/GIS platforms |
|
Flight range |
Several kilometres of image and telemetry transmission, flight endurance typically ~40–50 min |
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