|
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. |
|
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). |
