Am 24.02.2013 22:43, schrieb Monkey:
>There is a solution to the "whorl" problem and it is simple: Change
>orientation of Zenith and Nadir such that they are in the center of an
>image, blend, remap back and blend with the rest of the panorama.
That doesn't sound very simple to me;)
Well, I had a discussion some years ago whether or not it is possible to
blend around the top and bottom edge of an equirectangular image. The
conclusion was then that the math is too complicated (and this is what I
read from christoph's posting as well). Compared to that it is simple.
After a few quick and dirty additions to multiblend, I managed this on one
of Bruno's whorl examples:
http://img831.imageshack.us/img831/2221/dewhorl.png
Impressive! For a very hard test use 3 white and one black image. Load
them as 180° circular fisheye and manually place them at Yaw 0°, 90°,
-90° and 180° and pitch them up about 20°. View the result in a
spherical viewer. The feathered seam should be equally wide from zenith
way down to equator.
--
Erik Krause
http://www.erik-krause.de
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