[GRASSLIST:293] Re: Extracting roads from a sat image (ECW)

[Dylan Beaudette]

On Tuesday 21 March 2006 10:39 am, Luca Casagrande wrote:
> Hi guys!
> Anyone has ever try a procedure to extract roads from a sat image (ECW
> imported, in my problem)? I am doing some test with r.mapcalc and RGB with
> if condition...any other ideas?
>
> Thx
> Luca

edge detection, high pass filter.... ?

-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341