Eric Goddard wrote: > > I gave up on that pansharpening attempt. I can test some of my imagery > > tomorrow and let you know if I still have issues with it.
Nikos Alexandris wrote: > [rest deleted] > > I can't get any decent looking colors, with any of the methods. I wonder if > my images are not properly "aligned" or the like. PCA seems to approach it > right -- the value ranges seem to fit the reflectance scheme (below 1.0) > but the colors are so fancy... ? > > Will work on it later in the evening. To-day/-night I got it to work with 11-bit images! I rescaled them to [0, 255] and that seems to work just fine. Even color rebalancing (i.e. of Blue, Green and Red fusioned with Pan -IKONOS spectral bands) after the sharpening appears acceptable. A bit skeptical though since the rescaling action throws away some of the data's details... :-? All of my other attempts using out of [0, 255] range values, for example using Top-of-Atmosphere Reflectances (floating point values < 1.0) or the raw IKONOS bands that range between [0, 2047], were not successful. So, does i.pansharpen expect only 8-bit images? Can someone confirm or reject? Thanks, Nikos _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
