Adrian Kirilov wrote: > Hello to the GRASS users,
Hello Adrian, > Does anybody know how to equalize, or stretch, the histogram of a > raster? In general, you can perform histogram equalisation on any GRASS raster map's color table by using the "r.colors" module and instruct the "-e" flag. The "- e" flag (quoting from its manual) "is designed to work with any color table, both the floating point and the integer raster maps". Please have a look in the manual (grass64): <http://grass.osgeo.org/grass64/manuals/r.colors.html> (or grass70: <http://grass.osgeo.org/grass70/manuals/r.colors.html>). Note, this will operate on the color table associated with the raster map in question. It wont affect the map's actual pixel values. > The last represents Sky-view Factor based on a DEM model. It is > well-known visualization technique when looking for archaeological > structures. > > I have to do *minimum-maximum stretch of the histogram with saturation > of minimum*. How to do this in GRASS? Any help will be highly appreciated! I don't know what the "...with a saturation of minimum" means. Maybe someone else that understands this stuff better can help. Best, Nikos _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
