Am 26.02.2012 09:36, schrieb kfj:
This is useful for 360 degree vertical panoramas as it eliminates the
top
and bottom borders.
If enblend actually follows this formula, then it's wrong: y + nh
would jump straight from the north to the south pole, where blending
is definitely not wanted. The correct formula is a bit more involved;
to turn a full spherical into a continuous tiling of the plane, every
other horizontal strip has to be flipped vertically and offset by w/2.
So now I wonder, is the documentation wrong, or the program, or both?
I guess it's you - I made the same mistake some time ago :-)
The doc says "for 360 degree vertical panoramas", which is exactly what
it's meant for. It does not wrap around zenith and nadir, but around the
+/-180° border just like for horizontally oriented panoramas only that
this border isn't assumed left and right but top and bottom. This is the
case f.e. for a cylindrical panorama shot with a horizontal main
rotation axis.
Blending across zenith and nadir isn't that easy. PTStitcherNG does it
by stitching and blending a separate zenith and nadir cap and then
blending those into the rest of the panorama. See
http://webuser.hs-furtwangen.de/~dersch/PTStitcherNG/Changes.txt
for details.
--
Erik Krause
http://www.erik-krause.de
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