[OSM-talk] AI detecting of buildings Idle thoughts
Rory McCann
rory at technomancy.org
Thu Aug 16 11:35:16 UTC 2018
What's funny is that this import was (according to the changeset
comment) based on "DigitalGlobe extracted building data". A straight up
import of the original building geometries would probably be (i) less
contentious (since a building is a building is a building), and (ii)
more accurate for calculating population figures (a use for building
data for humanitarian purposes) and (iii) better for OSM since lots of
buildings is better than landuse=residential polygons.
Sometimes people can try to be *too* clever. 🙂
On 16/08/18 13:16, Christoph Hormann wrote:
> On Thursday 16 August 2018, Warin wrote:
>>
>> Satellite imagery is available for the world..
>> But how much do you know of Africa?
>> [...]
>
> You maybe don't realize that but the kind of data garbage i pointed to
> is the direct result of projecting ideas and experiences of settlement
> structures of some part of the world onto a different one. We are
> mostly talking about scattered dwellings of what are probably mostly
> subsistence farmers here. The pointless polygon geometry drawing is
> the failed attempt to regard those as a typical European/North American
> residential area.
>
> If this is due to a lack of knowledge about the actual geography or
> because of a misguided belief that making it crudely look a bit like an
> European/North American residential area is kind of beneficial for the
> people there i don't know.
>
> Anyway we are drifting off-topic here and this does not really help the
> original question from John. My answer to that would be: Yes,
> automated methods can help to find unmapped settlements in OSM - less
> though in actually mapping them.
>
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