[GRASS-user] Correction for terrain effects?

[nikos.alexandris at felis.uni-freiburg.de]

I got the 2nd edition of the GRASS-GIS book from a friend. 

Excellent! It is one of the best introductions in GIS and
RS that I have
seen. Special attention is given to the terminology used in
the field of
GIS and RS which is very important... as we tend to use
language(s),
very often, not correct. 

I tried to follow the example for correction of terrain
effects in a
MODIS surface reflectance NIR band 
(...as far as I know, MODIS surface reflectance imagery is
only
corrected for atmospheric effects). 

I don't get the desired results... The output is too bright
from what
one would expect it to be. 

Any recommendations?