3D products
Surface and terrain models, 3D buildings and height change, from very high resolution stereo imagery and SAR.
- 15 cmOptical, enhanced · Vantor
- 30 cmOptical stereo · Vantor
- 50 cmOptical · Planet
- 25 cmSAR · ICEYE
Models
| Product | Content |
|---|---|
| DSM | Digital surface model: ground, buildings and vegetation |
| DTM | Digital terrain model: bare ground, objects removed |
| nDSM | Object height above ground: buildings and trees |
| 3D buildings | Footprints at measured height, LOD1 blocks or LOD2 with roof shapes |
| True orthophoto | Imagery rectified against the surface model, no building lean |
| Terrain derivatives | Contours, slope, aspect, hillshade |
| Volumes | Stockpiles, quarries, landfills, cut and fill |
| Visibility | Line of sight and viewsheds |
Change detection
- 01
New and demolished buildings
Found by comparing surface models between dates, not only images.
- 02
Height change
Added floors and extensions, measured in metres.
- 03
Earthworks
Excavation and fill volumes between two dates.
- 04
Ground movement
Subsidence and landslides at millimetre scale, from SAR interferometry.
- 05
Vegetation
Tree loss and growth near lines, roads and buildings.
Sources
| Source | Products |
|---|---|
| Stereo optical, 30–50 cm | DSM, DTM, nDSM, 3D buildings |
| Tri-stereo optical | Dense urban surface models, fewer hidden areas |
| SAR interferometry | Ground movement at millimetre scale |
| Existing LiDAR or national DEM | Combined and updated with new imagery |
Service
- 01
Single model
One area, one epoch, in your reference system.
- 02
Updates
Repeat models for change, construction and volumes.
- 03
Integration
Streamed as 3D Tiles or served through OGC services to your platform.
Users
- Cadastre and mapping
- Municipalities and planners
- Telecom operators
- Engineering and construction
- Mining and quarries
- Utilities
- Defence
- Insurers
Delivery
- Elevation
- GeoTIFF, Cloud Optimized GeoTIFF, LAS/LAZ point clouds
- 3D buildings
- CityGML, CityJSON, OBJ, 3D Tiles
- Vectors
- GeoPackage, Shapefile, DXF
- Reference system
- GGRS87 (EGSA87) or as specified