[Imports] Yet another global building footprints import attempt

[Phuntsho Dorji]

Dear all,

We have recently updated our building footprints with addresses in Thimphu,
Bhutan. I hope with the import of building footprints from Bing map, our
information will not get deleted.

Thanks
Phuntsho Dorji


On Fri, Jul 22, 2022 at 3:57 PM Cascafico Giovanni <cascafico at gmail.com>
wrote:

> Il giorno ven 22 lug 2022 alle ore 10:39 Mateusz Konieczny via Imports <
> imports at openstreetmap.org> ha scritto:
> >
> > Have you contacted all local communities affected?
> No. Considering small extensions and personal work, test areas are very
> close to manual tracing. The only changeset involving a large and
> problematic area has been submitted to Greece mailing list before uploading.
>
> > How imported data will be verified?
> Sorry, I cannot find verification references in import guidelines. Anyway
> I just split a specific paragraph [1] to underline uploaded changesets.
>
> > Which imageries will be used to verify imported buildings?
> MS declares Bing, Maxar, Airbus imagery. No data on which and where
> provider objects are AI-traced.
>
> > How you will avoid importing buildings demolished in 2014 and deleted
> since?
> No chances to know that. In filtering criteria I can just add
> demolished:building that shall exclude touching candidates.. Anyway, any
> mapper can retrace deleted buildings, since 2014 imagery (and older) are
> still around.
>
> > As source is stated
> > "856M buildings from Bing Maps imagery between 2014 and 2021"
> > I want to note that Poland should be excluded, as there are
> > highly superior sources of building data[1] for supervised imports
> > and Bing Maps imager is of poor quality here.
>
> In workflow, first condition is candidate geometries touching existing
> building (or demiolished:building) shall be excluded from import.
> As a test, I processed an area in my administrative province, which
> buildings has been imported 13 years ago from reliable institutional
> sources. As a result, I was able to add several newer residential
> buildings. Maybe I re-added some mapper deletion, as any other mapper could
> do using existing imagery not up-to-date.
>
>
> [1]
> https://wiki.openstreetmap.org/wiki/Import/Catalogue/GlobalMLBuilding#Changesets
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