[Proj] Projection of Airial images by reference points

Thomas Flemming tf at ttqv.com
Fri Aug 22 12:25:28 EDT 2008


I would like to know, if the proj-libary might also have a function to give a 
projection of images or scanned maps where the geographical projection is 
unknown but where only some reference points are known.

For example I have some aerial images where I exactly know at least 4 or even 
more points on the ground with there geographical coordinates.

I would like to have a "projection", like latlon2xy and xy2latlon for all 
points of the image according to the known reference points.

Something like polynom-approximation?
Is there such thing already in proj?

Best regards,

**   Dipl.-Ing. Thomas Flemming
**   Software Development
**   Touratech AG
**   Auf dem Zimmermann 7-9
**   D-78078 Niedereschach
**   mail  tf at ttqv.com
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**   fax   +49 (0) 7728 9279-29
**   http://www.ttqv.com
**   http://www.touratech.de
**   ... und immer dem Pfeil nach!

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