wwp@yahoogroups.com:
Re: Remapping leads to quality loss ?
Erik Krause 2005-Apr-14 22:00:00
On 3 Apr 2005 at 3:03, Sven Hafner wrote:
> A rather technical question regarding remapping from cube faces to
> equirectangular image and back. Is it true that each time you convert
> you are loosing quality ???
It's true, although the degradation is minimal. It depends largely on
the interpolator used. For a comparison of interpolators see:
http://www.path.unimelb.edu.au/~dersch/interpolator/interpolator.html
But notice that these examples are after 36 interpolation steps...
> Some workflow requires cubic faces for
> floor but the whole image better for sharpening,...
> Any opinion or experience?
If you look at the possibilities described in the 'Extracting and
inserting rectilinear Views' tutorial on http://wiki.panotools.org
(Tutorials section) you'll find one that is capable of only remapping
the floor and inserting it back into the original panorama as a
separate layer giving you the opportunity to only use the parts you
definitely need.
best regards
--
Erik Krause
Ressources, not only for panorama creation:
http://www.erik-krause.de/
Read panotools at GMane:
http://news.gmane.org/gmane.comp.graphics.panotools