On Thursday 16 August 2018, Frederik Ramm wrote: > > In a way, it's what we did in Western Europe when we only had Landsat > imagery: "Uh, this looks like a settlement, let's draw a grey blob"
Absolutely not. The settlement structure of Western Europe can be pretty accurately mapped from Landsat images. What the data import linked to contains has no similarity to this. And even if it did superficially this would be a pretend similarity because the settlement structure in this part of the world looks nothing like that of Western Europe. This is just taking some auto-detected buildings, throwing some random algorithms at it and labeling the resulting abstract geometries landuse=residential. Ironically if you did do a halfway reasonable classification of settlement areas in Landsat data for this area the result would probably be much more like a verifiable mapping of settlements in the area than what we can see now in the database. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
