[Talk-us] High resolution off-leaf imagery of Virginia (VBMP)

Ian Dees ian.dees at gmail.com
Tue Mar 1 13:49:41 GMT 2011


I don't understand what you mean by "plain old TMS or WMS".
TileStache/TileCache do offer TMS (and TileCache does WMS).

On Tue, Mar 1, 2011 at 7:46 AM, Josh Doe <josh at joshdoe.com> wrote:

> True, it is straightforward to get the tiles, and the specification is
> open [1]. The trouble lies with reprojecting the tiles, or informing
> the editor of the projection. Easiest way may be to write an extension
> to MapProxy/TileCache/etc so we can just use plain old TMS or WMS.
> Hopefully VGIN will directly offer this kind of service at some point.
> -Josh
>
> [1]: http://resources.esri.com/help/9.3/arcgisserver/apis/rest/index.html
>
> On Tue, Mar 1, 2011 at 8:40 AM, McGuire, Matthew
> <Matt.McGuire at metc.state.mn.us> wrote:
> > It is just jpegs over http.
> >
> >
> > -----Original Message-----
> > From: David Fawcett [mailto:david.fawcett at gmail.com]
> > Sent: Monday, February 28, 2011 1:20 PM
> > To: Josh Doe
> > Cc: OSM US Talk List
> > Subject: Re: [Talk-us] High resolution off-leaf imagery of Virginia
> (VBMP)
> >
> > You have to love open, public domain data only published in
> > proprietary formats...
> >
> > On Mon, Feb 28, 2011 at 11:18 AM, Josh Doe <josh at joshdoe.com> wrote:
> >> I'm not sure how many are aware of this, but the Commonwealth of
> >> Virginia regularly acquires high resolution orthoimagery, through the
> >> Virginia Base Mapping Program, administered by the Virginia
> >> Information Technologies Agency (VITA). Some of this data is in the
> >> public domain. Specifically, the flights from 2002 and from 2006/2007
> >> are available online [1], and Google even uses some of this imagery
> >> for certain parts of Virginia (though not in my area). The imagery
> >> from 2006/2007 varies in resolution from 6 inches to 1 foot.
> >>
> >> Unfortunately this data is only available via an ArcGIS Server, using
> >> their REST interface. I made an attempt to write a plugin to support
> >> that interface in JOSM but was unsuccessful, however through some
> >> trickery I was able to create a local OSM-style tile cache of my small
> >> area of interest, and have found it very useful due to the high
> >> resolution and especially because I can see right through the trees,
> >> since it's off-leaf.
> >>
> >> It's expected that later this year VBMP imagery from 2009 is to be
> >> released into the public domain. This imagery varies in resolution
> >> between 3 inches and 1 foot. VITA is testing a WMS server, but there
> >> are no guarantees it will become available.
> >>
> >> If anyone is interested in adapting JOSM and/or Potlatch2 to support
> >> the ArcGIS REST tile interface, please let me, as I'd be interested in
> >> collaborating.
> >>
> >> It would be fantastic for Virginia OSMers to have access to this data,
> >> especially when the 2009 imagery becomes available!
> >>
> >> Regards,
> >> -Josh
> >>
> >> [1]:
> http://wiki.openstreetmap.org/wiki/Virginia#Virginia_Base_Mapping_Program_.28VBMP.29_Orthoimagery
> >>
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> >>
> >
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