Aerial ortho-photogrammetry surveys capture high-resolution imagery of the tops of surface features such as trees, crops, buildings, and infrastructure.
This data is used to create a Digital Surface Model (DSM) and an orthomosaic. On sites not covered by dense vegetation, such as quarries, coal stockpiles, roads, or railways, ortho-photogrammetry can be carried out independently to map visible surface features.
On sites with vegetation, it is often combined with a Aerial LiDAR survey, which produces a Digital Terrain Model (DTM) of the bare-earth surface, allowing both the underlying terrain and above-ground features to be captured.
Surveys are carried out using the DJI M400 UAV equipped with a DJI P1 HD camera, with ground control points installed before each survey to ensure the 3D data is fully georeferenced.
Deliverables
- High-resolution orthomosaic in TIF format
- Digital Surface Model (DSM) in point cloud format
Range of applications
- Land covered in woodland
- Land covered in crops
- Rail embankments
- Road embankments
- Canal embankments
- River embankments
- Rail cuttings
- Quarries
- Coal stockpiles
- Infrastructures such as roads, railways, and canal paths
