Someday we'll add auto lens distortion correction based on exif tags. That's a ripe problem for an open source database... lens models... i guess there's lensfun but we need a script that can auto generate a lens model from a set of photos of a checkerboard. On Apr 5, 2012 6:06 PM, "Tim Waters" <[email protected]> wrote:
> Awesome stuff, > > Reminds me of one of the first images on the old map warper :) > > http://warper.geothings.net/maps/68 > > And http://wiki.openstreetmap.org/wiki/Stratford-upon-Avon/Imagery where > during a GIS conference in 2009, someone was allowed to poke their camera > out the window of a light aircraft. > > Obliqueness was the main thing both old school gdalwarp projects > encountered. Which mapknitter gets around very very nicely! > > Cheers, > > Tim > > On 5 April 2012 21:28, Jeffrey Warren <[email protected]> wrote: > >> Just wanted OAM folks to know there are larger areas being mapped now, >> see below :-) >> >> really -- with 2-3 more of Doc's images, i can get a 3m/px map of the 5 >> boroughs. It seems like OAM hasn't been pulling in new data as much but if >> there's anything I can do to make MapKnitter maps more auto-pullable, say >> the word. >> >> We also recently added different (open) default base layers to rectify >> against, as well as explicit licensing of the outputs: >> >> http://mapknitter.org/map/license/publicdomain >> http://mapknitter.org/map/license/cc-by >> >> It seems like a dedicated group of air travelers could map most cities >> around the world at ~1 m/px in a reasonable amount of time, say, months. >> >> jeff >> >> ---------- Forwarded message ---------- >> From: Jeffrey Warren <[email protected]> >> Date: Thu, Apr 5, 2012 at 10:04 AM >> Subject: rectifying Doc Searls' window-seat photos of NYC >> To: [email protected], [email protected] >> >> >> Doc Searls takes LOTS of photos from the windows of commercial airliners: >> http://www.flickr.com/photos/docsearls/ >> >> Most are Creative Commons Attribution! I gave a couple a try over >> Brooklyn: >> >> http://mapknitter.org/map/view/newtown-creek-docsearls >> >> You have to zoom out a bit, or just try this full-screen version >> (embeddable if you want to put it on a blog post): >> >> >> http://archive.publiclaboratory.org/leaflet/?tms=http://mapknitter.org/tms/newtown-creek-docsearls/&lat=40.7239029817&lon=-73.9606764107&zoom=12 >> >> We've talked about this before -- the idea of just getting lots of people >> to photograph key areas from their plane >> windows<http://publiclaboratory.org/passenger-pigeon>. >> Using Doc Searls' photostream, we can try this out. His were from quite >> high up -- 2-3 meter resolution -- i wonder if some on approach to >> LaGuardia could get intermediate resolutions like ~ 30-40cm/px. It'd be a >> great counterpart to the high-res balloon mapping, especially for places >> like the Gowanus Canal and New Town Creek, where periodic monitoring is the >> goal. >> >> Jeff >> >> >> _______________________________________________ >> talk mailing list >> [email protected] >> http://host134.hostmonster.com/mailman/listinfo/talk_openaerialmap.org >> >> >
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