[Talk-ca] using image recognition to create building foot prints.

Gravel, Pierre (NRCan/RNCan) pierre.gravel at canada.ca
Tue Feb 6 18:18:41 UTC 2018

Hi Stewart
Our automatic extraction process is based on airborne LiDAR point cloud and not on optical imagery or elevation raster derived from LiDAR.

NRCAN doesn't have LiDAR over Toronto yet.
I will try to spread the pre-production over urban and rural areas (ehre we have LiDAR of course).
You can check yourself our LiDAR collection through Open Maps Canada. Presently, the viewer seems to not work well but you can download metadata coverage in kml or shp as well.
I open to suggestion for our pre-production. I prefer to process data where people have an interest.



-----Original Message-----
From: Stewart C. Russell [mailto:scruss at gmail.com] 
Sent: February 6, 2018 12:54 PM
To: talk-ca at openstreetmap.org
Cc: Gravel, Pierre (NRCan/RNCan) <pierre.gravel at canada.ca>
Subject: Re: [Talk-ca] using image recognition to create building foot prints.

On 2018-02-02 11:01 AM, Gravel, Pierre (NRCan/RNCan) wrote:
> I take the opportunity to ask you if you accept to give us a feedback 
> on these footprints before the official launch.
> If yes, It will be my pleasure to provide a pre-production data for 
> those who want to check them.
> It sounds good ?

It sounds amazing, thanks. I'd be very happy to take a look at a sample from Toronto if one's available. I'd like to see how it compares with the not-yet-usable-in-OSM Toronto building data.


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