[Talk-GB] [OHM] New York Public Library - Building Inspector

Rob Nickerson rob.j.nickerson at gmail.com
Mon May 12 20:08:23 UTC 2014

Hi Steven,

Thanks for the offer of help. Yesterday I managed to get the NYPL
vectorizer working (this is the tool that has a first stab at creating
vectors from the map). I did this on a small screenshot of NLS's London
maps. I've asked Chris if he could send me a GeoTIF to do a larger scale

Some of the key areas that I think need addressing:

* Improving the automated vectorizer. Currently the vectorizer creates
polygons of the inside of buildings (rather than following the wall). For a
terraced street this produces a row of detached buildings. Some processing
could improve this. I guess this could be done before, after, or both
before and after the polygon has been processed by the human volunteers on
the website.
* The website looks like it's a Rails site. I would need a lot of help with
this as it's an area I know very little about.

Are you able to help with either of these?

Kind regards,

On 12 May 2014 16:26, Steven Horner <steven at stevenhorner.com> wrote:

> Hello,
> I would be happy to help in anyway and have previously had a conversation
> with Chris at NLS regarding helping georeference some of their maps.
> I had been looking into creating my own historical version of OSM for a
> local personal project, when I looked a few weeks ago Open Historical Map
> was down and was never very usable before that. It sounds like from the
> WIKI things maybe starting to happen, date slider planned, etc.
> regards,
> Steven
> On Sat, May 10, 2014 at 10:04 PM, Rob Nickerson <rob.j.nickerson at gmail.com
> > wrote:
>> Hi All, Historic Map folks,
>> I have now heard from Chris at National Library of Scotland (NLS). He is
>> very supportive* of the idea of using something similar to the NYPL
>> Building Inspector software and website for digitizing some of NLS's
>> historic maps. As NYPL have made all their software Open Source, it should
>> be relatively easy to roll this out with NLS's (or other) maps.
>> Who's interested in getting involved? You lot set the pace of this :-D
>> Regards,
>> Rob
>> * NLS would be able to supply the scanned and geo-rectified maps. As with
>> everyone else their ability to do any more is limited by their level of
>> funding. This should not be a problem as we can self host the website.
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