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I am very new to OSM. I am working on a computer vision project to segment buildings using Aerial images. I am looking for data that has the geographic coordinates of building corners. I cam e across JOSM to label building, but not sure how to extract the data. I'd be glad if someone could point me to the right direction to get the data.

asked 22 Feb '18, 19:08

sam1107's gravatar image

sam1107
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accept rate: 0%


Read https://wiki.openstreetmap.org/wiki/Elements and https://wiki.openstreetmap.org/wiki/Key:building

If a (closed) way is tagged as building, then the way's nodes are the building corners. Each node has coordinates.

If a relation is tagged as building it is more complicated - see https://wiki.openstreetmap.org/wiki/Relation:multipolygon , but 99% of all buildings are simply closed ways, so I think for the start you can ignore relations.

And for really getting filtered data https://wiki.openstreetmap.org/wiki/Overpass_turbo is your friend (use its wizard for the start).

permanent link

answered 22 Feb '18, 19:41

aseerel4c26's gravatar image

aseerel4c26 ♦
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accept rate: 18%

edited 22 Feb '18, 19:43

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question asked: 22 Feb '18, 19:08

question was seen: 4,091 times

last updated: 22 Feb '18, 19:43

NOTICE: help.openstreetmap.org is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum