[GRASSLIST:291] Extracting roads from a sat image (ECW)

[Luca Casagrande]

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
-- 
"E' molto più bello sapere qualcosa di tutto, che tutto di una cosa (Blaise 
Pascal)."

GENTOO-GIS Development Team
jabber: casagrande at jabber.linux.it