2010/9/29 Markus Neteler <nete...@osgeo.org>: > 2010/9/28 António Rocha <antonio.ro...@deimos.com.pt>: >> Greetings >> >> I'm trying to find if GRASS includes some-sort of way to detect/eliminatd >> cloud cover and shadows from LANDSAT Images. >> The only thing I found was this: >> http://svn.osgeo.org/grass/grass-addons/imagery/i.landsat.acca/description.html >> But: >> 1- has anyone tried/used this? Is this useful and working?
Yes, I've used it in the past using 6.3 svn. I highly recommend it. You need to convert your Landsat data to top-of-atmosphere radiance or top-of-atmosphere reflectance first before running i.landsat.acca: http://grass.osgeo.org/wiki/GRASS_AddOns#i.landsat.toar Off-topic: I hope the landsat tools (i.topo.corr, i.landsat.toar, i.landsat.acca, i.landsat.dehaze, i.attcorr) gets into the core in the future. > It is currently under active development. Useful - hope so :) > >> 2- can I use it to detect-and-eliminate clouds? > > Should be the idea. The best way is to contact the author who > is very responsive (see manual page). > > Cheers > Markus > >> Thanks >> Antonio >> >> >> __________ Information from ESET NOD32 Antivirus, version of virus signature >> database 5486 (20100928) __________ >> >> The message was checked by ESET NOD32 Antivirus. >> >> http://www.eset.com >> >> >> _______________________________________________ >> grass-user mailing list >> grass-user@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/grass-user >> > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/grass-user > -- cheers, maning ------------------------------------------------------ "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ ------------------------------------------------------ _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user