[OHM] [OSM-talk] NYPL / map-vectorizer - An open-source map vectorizer

[SK53]

More on the background here:
http://www.nypl.org/blog/2013/07/12/maphack-hacking-nycs-past-nypl-labs-friends

This along with most NYPL map stuff on line (e.g., MapWarper)  seems to
involve Topomancy LLP, some of whom are subscribers to this list, and
strong OSM advocates.

I'd rather see constructive comments, than criticism from people who
haven't provided any tools to enable vectorisation of historical maps.

@LesterCaine: I dislike the French pdf extractor, but because it has
enabled a lot of poorly thought through imports. The cadastral data which
it extracts is really nothing more than lines and parcel numbers, so no
real data lost. The accuracy seems OK (at least compared with hand tracing
cadastral parcels in JOSM).


On 8 January 2014 13:45, Rob Warren <warren at muninn-project.org> wrote:

>
> Could you provide some background on these methods so that the rasterizer
> might be improved? -rhw
>
> > Message: 4
> > Date: Tue, 07 Jan 2014 11:38:33 -0500
> > From: Richard Welty <rwelty at averillpark.net>
> > To: historic at openstreetmap.org
> > Subject: Re: [OHM] [OSM-talk] NYPL / map-vectorizer - An open-source
> >       map     vectorizer
> > Message-ID: <52CC2D89.6010409 at averillpark.net>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > On 1/7/14 8:08 AM, Gregory wrote:
> >> Fowarding this to the historic mailing list, which may be interested.
> >>
> >> Although I'm not too impressed with the example picture on the blog
> post.
> >>
> >>
> > yeah, i used to work on stuff like this back in the late 80s and early
> 90s
> > (with imagery of the real world, not digitized maps). this project
> appears
> > to _not_ be applying a lot of techniques that were known back then, and
> > i'm sure the state of the art has advanced since i worked in the field.
> >
> > richard
>
>
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