[GRASSLIST:513] Re: DEM Generation from stereo optical imagery

Markus Neteler neteler at itc.it
Wed Jun 25 03:45:04 EDT 2003


On Tue, Jun 24, 2003 at 09:23:40PM -0700, Gerald Buckmaster wrote:
> Greetings,
> 
> I am looking for a low cost DEM generation solution.  I've seen several 
> commercial software packages like Orthoengine, Orthobase, AsterDEM, etc. that 
> can generate DEM/DTM from stereo imagery, but nothing in the open source.  
> Can GRASS be utilized to generate DEM?  If so, what commands/scripts will do 
> so, and how labor-extensive is the process?  If not, can anyone describe, in 
> layman's terms, what is required to create software that can generate DEM 
> from stereo imagery?  I am specifically targeting ASTER 3N and 3B 15m stereo 
> image set as the input data.
> 
> TIA
> 
> Gerald Buckmaster

This software
http://grass.itc.it/gdp/stereo-grass/
should generate a points (sites) file, which could be used then to
interpolate the DEM using s.surf.rst etc.

The author of above page told me that he used it for creating DEMs.

Best regards

Markus Neteler




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