[postgis-users] Trignometry and triangulation to find location from photo

Robert Buckley robertdbuckley at yahoo.com
Tue Oct 18 22:56:26 PDT 2011

Hi ,

I have a task which I though would be a good learning excercise for me, however it turns out that I need to go back to elementary school and pay more attention!

I though I would ask the forum incase anyone has done anything similar. It is only marginally related to postgis but if anyone knows of a better forum please let me know.

The Problem:

I have a postgis database populated with points which represent locations of wind turbines. I need to regularly update the database when new turbines are built or old ones are replaced or removed.
Usually I recieve coordinates or a shapefile, but this time I have only recieved a photograph taken at eye-level which show 5 existing wind turbines( for which I have points) and the foundation of the new windturbine presently being built.

Using the existing wind turbines as reference points, and knowing their heights is the only information I have to determine the location of the new wind turbine. Using trignometry and triangulation techniques is it possible to determine the location of the new wind turbine?

I´m sure there is software to do this, but I thought asking here might bring me closer to an answer quicker.

thanks for any help,

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