An overview of the activities of the TUDelft 3D geoinformation group

Invited presentation at the HERE Technologies Geospatial Brownbag Session
2024--05--31
(online presentation)}

Transcript

1. Hugo Ledoux
2. Founded in 2015 Faculty of the Built Environment & Architecture TU Delft, the Netherlands Brief overview
3. The team
4. Our (over-the-top) website
5. Urban environment and 3D geoinformation Our focus
6. 6 Whole North Rhine- Westphalia: 10M+ LoD2 buildings More and more 3D data from cities
7. New York City More and more 3D data from cities
8. 8 Helsinki: with textures More and more 3D data from cities
9. 9 Whole of the Netherlands in LoD2.2 More and more 3D data from cities
10. Why 3D geoinformation?
11. solar potential shadow analysis noise modelling energy estimation bomb detonation wind turbulence pollutant tracking
12. 12 3D use in mainstream media: NY Times https://www.nytimes.com/interactive/2016/12/21/upshot/Mapping-the-Shadows-of-New-York-City.html
13. Some projects
14. https://3dbag.nl all 10M+ buildings in the Netherlands Point cloud (AHN3) Footprint (BAG) + X 10,000,000 100% automatic
16. https://3dbag.nl • Collaborations between https://3dgi.nl and us • Whole workflow is (will be soon!) 100% open-source • Roofer: C++ library for LoD2.2 reconstruction • Pipeline from raw data to buildings in DBMS + CityJSON
17. Another 3D reconstruction: City3D! Airborne LiDAR LoD2 building model
18. Highly-detailed reconstruction 3D trees from laser scanning 3D buildings from drones Check our website for code!
19. AI for understanding 3D textured meshes Funded by Cyclomedia
20. Semantic segmentation of 3D meshes
21. Semantic segmentation of 3D meshes
22. Quality control of 3D city models Automatic repairing of broken 3D city With my colleague John Zhao, we’re making an overview of the most common errors/problems, such as: 12 http://geovalidation.bk.tudelft.nl/val3dity/
23. Wind simulation in cities
24. City4CFD: reconstruct CFD input automatically Only open-source software is used OpenFOAM
25. LoD1.2 LoD2.2 UAV safety maps over urban environments
26. SCIENCES, Marie Curie grant Energy and CFD modelling to minimize energy usage
28. 28 • community standard • compliant with CityGML v3.0 • subset of CityGML (~90% of features) • software for full conversion CityGML <-> CityJSON • several software support CityJSON new! CityJSON v2.0
29. 29 CityGML = 3.0GB (but 1GB of spaces/CRs/tabs!) CityJSON = 292MB Compression of files: Zürich LoD2 buildings
30. GeoBIM integration
32. 32 RhinoCityJSON
33. 33 • Generaties City models’ geometries and attributes in BIM environment • Reprojecting and translating data based on metadata and coordination referencing systems (CRS) • Available at Autodesk App Store as a free featured app CityJSON importer for Autodesk Revit
34. ➡ h.ledoux@tudelft.nl ➡ https://3d.bk.tudelft.nl more info than you probably need! projects, papers, code, etc 2 courses are open (book+YouTube): • terrain modelling (AHN4) • 3D modelling for the built environment Thank you