Hugo Ledoux

validatoin

Transcript

1. 3D4EM Validation of 3DTOP10NL Hugo Ledoux 2015-11-11 User’s committee meeting, Utrecht
2. 3D top10NL 2
4. How good is it?
5. visible errors
6. construction = intricate workflow 6 ITC/Sander’s code FME + ArcGIS output
7. Now freely available online 7 http://www.arcgis.com/home/webmap/viewer.html?layers=15acccc56e6a462ab7b79a9d5c6d4933&useExisting=1
10. ALL triangles are duplicated !
11. often big parts of tiles are missing 11
12. some classes are not triangulated 12
13. triangulation has several long and skinny triangles 13
14. Vertical triangles have often the wrong orientation 14
15. TOP10NL polygons are arbitrarily split 15
16. borders of top10nl tiles 16
17. ALL buildings are geometrically invalid 17
18. Some numbers 18 8,5% of regions
19. Are these errors a problem for you?
20. They were for us!
21. 3dfier An open-source toolkit to construct large 3D city models
23. 23 • open-source libraries used: ‣ liblas, GDAL, Boost.Geometry, Triangle • scalable and fast (C++) ‣ our aim is to construct whole NL on our server • configurable: any input would work (3DBGT!) • valid output
25. Far from finished 25
26. thank you. h.ledoux@tudelft.nl 3d.bk.tudelft.nl/hledoux Hugo Ledoux