[Imports] Addition of building footprints in selected U.S. and Canadian cities

[Serge Wroclawski]

On Thu, Mar 22, 2012 at 3:47 PM, Ian Dees <ian.dees at gmail.com> wrote:
>
> On Thu, Mar 22, 2012 at 2:39 PM, William Morris <wboykinm at geosprocket.com>
> wrote:
>>
>> Hello all,
>>
>> Some colleagues at the UVM Spatial Analysis Lab have offered to submit
>> features to OSM that are derived from their high-res (1 meter) LULC
>> analyses at locations throughout the U.S. and around Toronto
>> (locations here: http://g.co/maps/h9qfx). Their work was primarily
>> intended to map urban tree canopy, but they've captured various
>> impervious surfaces as well, including excellent building footprints.
>>
>> Here's an example near UMD of current OSM coverage vs. UVM-SAL
>> coverage: http://flic.kr/p/bseokW

> Building footprints are interesting and we an talk about importing them a
> bit more, but can you describe how they were derived?

+1

> It looks like there
> was some classification algorithm used to spot tree cover, parking, roads,
> and buildings. Is the building detection fast
> enough/compartmentalized-enough to be thrown into an editor plugin so we
> could do that automatically from within our editors?
>
> As far as importing, can you describe what format the files are in
> currently? Exactly which areas do they cover? Have you looked at those areas
> to see if there is existing data?

Depending where in Montomery County you're looking, there are some
building traces, because I have made some from Bing imagery. UMDCP
(which is the UMD in the image) also gave their footprints from
official data.

Do you have any other parts of MD? Montgomery County, for example?

If you do, I'd like to compare your data to what I and others have
done by tracing.

- Serge