logoalt Hacker News

wongarsulast Wednesday at 1:22 PM1 replyview on HN

Github: https://github.com/zhu-xlab/GlobalBuildingAtlas

Viewer: https://tubvsig-so2sat-vm1.srv.mwn.de/ (might already be hugged to death? When it works you get a heatmap when zoomed out, and 3d models with flat roofs when you zoom in far enough)

Looks pretty cool. Obviously only covers above-ground buildings or above-ground portions of buildings. Also seems like it tends to view buildings built wall-to-wall next to each other as the same building, but not always. So if you calculate something like average building volume you are bound to be off quite a bit


Replies

liotierlast Wednesday at 2:48 PM

InfoReseaux remarked that this data is suspicious, to say the least: CC BY-NC 4.0 but contains ODbL licensed data coming from Openstreetmap - but also from Microsoft.

Thread on the Openstreetmap forum: https://community.openstreetmap.org/t/is-globalbuildingatlas...

Christian Quest sent the following message to the authors:

"I’m writing to you because I’m surprised by the choice of data license you’ve set on the GlobalBuildingAtlas dataset.

As mentioned and explained in your paper, at least two data sources you’ve been using to create this dataset are under the Open Database License (ODbL): OpenStreetMap and Microsoft building datasets.

I’ve downloaded the extract of data you’re proposing to have a look at the final dataset, and it confirms that building polygons from OSM (and Microsoft) are present in the resulting dataset in a substantial portion.

In such case, your dataset must be published under the ODbL licence (see 4.2), because it is a derivative database (see 1.0 of ODbL license for definition).

A copy of this message has also been sent to the Legal Working Group of the OSM Foundation.

Thanks in advance to fix quickly the license of the dataset you published. This will also allow OpenStreetMap contributors to use it to improve OpenStreetMap, which is not possible with the CC-BY-NC you choose."