[HOT] Suggestions for Helicopter-based Imagery

[Jeffrey Warren]

What's interesting about that technique is that it uses Hugin to
orthorectify imagery but he mentions that he is manually correcting ground
control points (GCPs). This almost invalidates the use of hugin, but makes
sense since what you really want to do is rectify against a reference map,
so that the data doesn't drift.

Manual stitching has for the most part proved to be much more accurate, even
for large areas, and especially for relatively oblique imagery. (and in fact
because in the osm.totor.ph example, he is actually manually moving GCPs, he
might be better off using a program which allows a reference layer)

Jeff

On Thu, Feb 10, 2011 at 12:55 AM, maning sambale <emmanuel.sambale at gmail.com
> wrote:

> An osmer used this approach in the Philippines:
> http://osm.totor.ph/
>
> On Thu, Feb 10, 2011 at 1:31 PM, george chamales <george at konpagroup.com>
> wrote:
> > Hello everyone,
> > I'm looking for tips / recommendations / suggestions for the ideal way to
> > collect and process photos taken from a helicopter (full-size, not RC)
> for
> > use in OSM.
> > At the very least we'll have a decent point-and-shoot, a gps, and a
> > helicopter.  Still waiting to hear what our ceiling is and am trying to
> hunt
> > down a bubble level.
> > Would be great to get some information back soon - there's a possibility
> > that we could be in the air as soon as Friday.
> > george
> > George Chamales
> > Konpa Group
> > Mobile: +1 718.288.7718
> > Fax:  +1 857.488.4002
> > Skype:  notgeorge
> > http://konpagroup.com
> >
> > _______________________________________________
> > HOT mailing list
> > HOT at openstreetmap.org
> > http://lists.openstreetmap.org/listinfo/hot
> >
> >
>
>
>
> --
> cheers,
> maning
> ------------------------------------------------------
> "Freedom is still the most radical idea of all" -N.Branden
> wiki: http://esambale.wikispaces.com/
> blog: http://epsg4253.wordpress.com/
> ------------------------------------------------------
>
> _______________________________________________
> HOT mailing list
> HOT at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/hot
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/hot/attachments/20110210/45b6f027/attachment.html>