I'm trying to extract building outlines from LIDAR data. I have both a DSM and DTM (not created by me / GRASS) data and have created a normalized DSM from these.
I now want to extract building footprints from the DSM i.e. create a polygons of the buildings from the LIDAR. I've removed vegetation from the nDSM with a classification of aerial data. So my question, is it possible to use the the region growing algorithm to now extract the building outlines? The v.lidar.* tools seems geared toward filtering the LIDAR (i.e. to get a DTM) so I'm not sure if what I want to do is applicable here. I've already tried to get the footprints using a threshold on the nDSM and I'm not satisfied with the results. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/v-lidar-for-extracting-building-footprints-tp5464641p5464641.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
