On Fri, Feb 21, 2014 at 12:26 AM, Stefan Kiefer <[email protected]> wrote: > Hi, > I tried to orthorectify aerial photographs. That worked fine by now, until > i got scans wich appear to be darker as before. At least this is the first > observation I made. The effect occured with that scans is, that after > rectification some of the dark areas become white (or rather null, querying > that cells result in -0.722622310236638).
This should only happen with method=cubic or method=cubic_f. The other resampling methods nearest,bilinear,bilinear_f should not produce these resampling overshoots. Markus M > Has anyone had similar experiences when rectifying aerial photographs. And > hopefully a hint how to avoid this damages. I suspect that the > orthorectified images become double precision whereas the imported scans are > integer... > > best regards > > Stefan > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
