On Wed, Feb 3, 2010 at 4:43 PM, Nikos Dumakis <nikosdu1...@gmail.com> wrote: > In order to ensure that the remote sensing data sets are consistent and that > changes identified through multi-temporal analysis are indeed actual changes > in surface properties and not triggered by changed illumination and > extinction conditions, it is important to correct for effects of atmospheric > attenuation of the signal recorded at the sensor, as well as for > illumination variations within the scenes resulting from the > sun-sensor-surface constellation. > As far as I saw, there are no GRASS functions to perform Radiometric > Correction.
There is: i.atcorr. > The only reference that I found was related with Conversion of > DN's to absolute radiance values==> GRASS book refers it as Image > Calibration from DN to apparent radiance at sensor. > Is there any function to perform radiometric correction? or anyone has > developed something like that? Yes, please see http://grass.osgeo.org/wiki/Atmospheric_correction Markus _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user