[OSM-talk] scanned map -> osm format
nickblack1 at gmail.com
Mon Feb 12 14:16:59 GMT 2007
Automating the vectoriasation of maps is a pretty tricky business,
which hasn't really been solved. If you google for "map
vectorization", you'll find a lot about the problem. The basic
solution is to scan the map, create a greyscale image from the desired
roads (filter all non-blue to get motorways), then apply a
skeletonisation algorithm to derive vectors. So far as I know, there
is now open source software to do this. Converting to .osm wiould be
another story altogher, though once you had the data in a format that
could be read into PostGIS, it is quite straight forward to output OSM
On 2/12/07, Graham Seaman <graham at theseamans.net> wrote:
> I'm referring to Italian town maps of very doubtful copyright status
> (ie. can't trace any explicit copyright status anywhere). I intend to
> use them on my own site where I would be the sole responsible for any
> copyright issues, and don't want to merge them in with the OSM dataset
> to avoid possible pollution problems, so I was looking for some kind of
> free-standing tool to handle the conversion.
> Barnett, Phillip wrote:
> > I'm sure this email will set alarms off everywhere!!! :-)
> > You are referring to an out-of-copyright map, of course? We cannot use
> > any copyrighted material in OSM.
> > But you knew that anyway, yes?
> > Cheers.
> > PHILLIP BARNETT
> > SERVER MANAGER
> > 200 GRAY'S INN ROAD
> > LONDON
> > WC1X 8XZ
> > UNITED KINGDOM
> > T +44 (0)20 7430 4474
> > F
> > E PHILLIP.BARNETT at ITN.CO.UK
> > WWW.ITN.CO.UK
> > -----Original Message-----
> > From: talk-bounces at openstreetmap.org
> > [mailto:talk-bounces at openstreetmap.org] On Behalf Of Graham Seaman
> > Sent: 12 February 2007 11:04
> > To: talk at openstreetmap.org
> > Subject: [OSM-talk] scanned map -> osm format
> > Hi,
> > I'm sure this must be an FAQ but I can't find the answer anywhere: is
> > there any automated way to convert a scanned map to osm format? Or, if
> > it's not possible to fully automate, are there any tools for Linux which
> > will allow me to trace over a scanned map and save the output in osm
> > format? (I have a relatively clean map with just road outlines, and a
> > scattering of known gpx points to anchor it physically)
> > Many thanks
> > Graham
> > _______________________________________________
> > talk mailing list
> > talk at openstreetmap.org
> > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
> > Please Note:
> > Any views or opinions are solely those of the author and do not necessarily represent
> > those of Independent Television News Limited unless specifically stated.
> > This email and any files attached are confidential and intended solely for the use of the individual
> > or entity to which they are addressed.
> > If you have received this email in error, please notify postmaster at itn.co.uk
> > Please note that to ensure regulatory compliance and for the protection of our clients and business,
> > we may monitor and read messages sent to and from our systems.
> > Thank You.
> talk mailing list
> talk at openstreetmap.org
More information about the talk