On Mon, Jan 18, 2010 at 6:30 PM, Nikos Dumakis <[email protected]> wrote: > Greetings all > I've been following GRASS-user discussion related with pos-classigfication, > classification, aggregation and so on. But, while I was readingh those > emails I figured that I will need to perform, before classification, an > image segmentation to derive objects.
You don't need to perform a segmentation before doing classification but i.smap is doing it in a combined way. > Can anyone give me a clue abvout that because in GRASS book, I only founded > Image segmentation related with processing large quantities of vectorial > data (DEM's). (DEMs are raster data) What you need to do is to prepare the statistics with i.gensigset. See "radiometric & geometric supervised" in http://grass.osgeo.org/wiki/Image_classification (The book is explaining that as well) Hope this helps, Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
