Digital Ortho generation with grass

[Markus Neteler]

> 
> Hello,
> 
> I would like to do digital ortho generation using Grass.
> 
> Here is the data that I have:
>    . imagery scans
>    . ascii or USGS DEMs
>    . aerotriangulation data 
>    . camera calibrated focal length and radial distortion table
> 

Hi,  
 please have a look at the recently referenced 
 "Mailing list Archive" at

 http://www.laum.uni-hannover.de/iln/grass/grass42/grass_faq.html

 There was some discussion on that point.

 Cheers

   Markus