[Imports] Yet another global building footprints import attempt

[Cascafico Giovanni]

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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/imports/attachments/20220722/05da76aa/attachment-0001.htm>