Raw or processed aerial and satellite imagery — direct visual representations of the Earth’s surface. Imagery is the evidence layer from which many other datasets are interpreted: thematic maps, building footprints, forest inventories, and change products.
Scope
- Orthophotos: Geometrically corrected aerial photographs, typically at 10-25 cm resolution for Denmark
- Satellite imagery: Multispectral (Sentinel-2, Landsat), radar (Sentinel-1), very high resolution (commercial)
- Historical imagery: Archived aerial photos dating back decades, invaluable for change analysis
- Image mosaics: Seamless composites covering large areas at a single conceptual timestamp
- LiDAR point clouds: As raw 3D surface representation (derived DEMs are Topography)
Key Distinction: Evidence vs Thematic Interpretation
Raw imagery lives here as direct observational evidence. When imagery is classified into thematic categories, those outputs are represented as human interpretation in socio_technical_perception_thematics.
Classical Theme Mappings
| Standard | Theme | Link |
|---|---|---|
| ISO 19115 | Imagery/BaseMaps/EarthCover | EarthCover |
| INSPIRE | Orthoimagery | |Orthoimagery |
| UN-GGIM | Orthoimagery | |Orthoimagery |