[OSGeo-Discuss] Finding position based on horizon profile?

Ian Turton ijturton at gmail.com
Tue Mar 29 07:23:04 PDT 2011

On 28 March 2011 16:48, Michael P. Gerlek <mpg at flaxen.com> wrote:
> Consider the following hypothetical problem:
> Assume we have a good elevation data set for a large region of the earth --
> say, an entire mountain range.  Now let's say we have a photograph taken
> from the ground, the horizon of which shows the profile of a couple of the
> mountains in that range.  Can you tell me where the photograph was taken
> from?
> Any pointers to research in this area would be appreciated.

I think that http://www.heywhatsthat.com/ does some of  what you want.
I'm on a very slow hotel internet connection so I can't actually get
it to load just now. But my Delicious tags seem to indicate it's an

Ian Turton

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