Data sets with OGC 3D Tiles

[vvoovv]

Use #497 for technical discussions.

Data set	3D Format	View	Root URL
Helsinki	b3dm	https://kartta.hel.fi/3d	https://kartta.hel.fi/3d/b3dm_2017/tileset.json and https://kartta.hel.fi/3d/b3dm_2017_2/tileset.json (a newer version)
Aarhus	b3dm	https://sdfe-hosting.virtualcitymap.de/Aarhus	https://sdfe-hosting.virtualcitymap.de/Aarhus/datasource-data/Aarhus_Mesh/tileset.json
San-Francisco Demo by Aerometrex	b3dm	https://aerometrex.com/models/san-francisco-3d-model-2cm/	https://demo3d.aerometrex.com/USA/US0005_San_Francisco/San_Francisco_2cm_SL_split/Scene/Cesium_SF_2cm_mSL.json

[jo-chemla]

See from the official cesium 3d-tiles repo

• 3d-tiles sample-data for sample test data
• as well as data-providers for some demo datasets - usually behind paywalls, except for some open-data samples.

Other examples: cesium ion, aerometrex san-francisco, vexcel 3d-cities

[vvoovv]

@jo-chemla

Do you know any data sets available in the OGC 3D Tiles 1.1 format?

[jo-chemla]

The first link has sample datasets which or 1.1, but made for tests, these are not real data.

When you create a cesium ion free account, you do have access to some 3dtiles datasets - where cesium ion handles access/keys a bit differently than the same tilesets which would be hosted on a standard server, with SAS keys or JWTs. But most datasets seem to be 1.0 spec b3dm. Same for the aerometrex and vexcel tilesets, these are b3dm 1.0.

What you could do is use CesiumGS/3d-tiles-tools, with the upgrade command, like below. This would probably involve downloading the whole 1.0 tileset before conversion, and requires to follow thoroughly the licensing of that test tileset.

npx 3d-tiles-tools upgrade -i ./specs/data/TilesetOfTilesets/tileset.json -o ./output/upgraded --targetVersion 1.1

I do not have in mind public tilesets which do follow the 1.1 spec, will dig a bit!

@bertt did recommend some 1.1 tilesets Rotterdam pg2b3dm pdok.nl/kadaster implicit and explicit. These are not photorealistic ones but can still be useful for testing.

[vvoovv]

explicit

Unfortunately I am getting the error Extension EXT_meshopt_compression is not available on this addon version for the above dataset.

[jo-chemla]

Linked issue for EXT_meshopt_compression extension support within glTF-Blender-IO here