To show the full pipeline on a manageable scale, we processed one Hamburg intersection end to end.
- Satellite tasking — a fresh multispectral pass established the baseline.
- Aerial & drone survey — ultra-high-resolution oblique imagery added detail.
- Ortho & 2D mapping — a true orthophoto and clean vector layers, georeferenced.
- 3D reconstruction — photogrammetric mesh, point cloud and a CityGML model.
- Web 3D twin & simulation — streamed to the browser and into a game engine.
The point isn't the single junction — it's that the same workflow scales to a whole city, with every product referencing one ground truth.
