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

William Morris wboykinm at geosprocket.com
Thu Mar 22 20:17:39 UTC 2012


Here's Montgomery County in case you're up for sorting through it:
http://bit.ly/GRmaJy

And I think it's more in keeping with the spirit of OSM community
involvement to a.) run a conflict detection between
OSM-user-delineated buildings and UVM-SAL classified buildings, and
b.) import to OSM only those footprints that haven't already been
user-drawn. The OSM import docs are pretty clear about giving priority
to users over batch imports.

-B




----------
William Morris
Cartographer
(802)-870-0880
wboykinm at geosprocket.com
Twitter: @vtcraghead

GeoSprocket LLC, Burlington VT
www.geosprocket.com



On Thu, Mar 22, 2012 at 4:03 PM, Serge Wroclawski <emacsen at gmail.com> wrote:
> 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



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