Hi,
i create panoramas with 2 images where the sun comes up on one side and
goes down in the other corner.
however, at sun down and rise i have vignetting in the opposite corner,
eg, it's darker there...you might say this is expected behaviour and i
would agree.
when the sun is really low this creates a V shaped form, a while later
this becomes a dark band and eventually is fades and is gone.
while this is all expected the trouble starts when i stitch those frames
together with a command line script and a template.pto.
suddenly we have 2 places of vignetting, one at the edge and one
opposite to the middle, since both original images have vignetting.
with help i tried different approaches on reducing this automatically
with imagemagick, but due to light differences between shots, clouds and
so on, we didn't get it working properly.
although some methods of remapping mean values did reduce or remove the
dark band it also created strange light effects and color changes on
other occasions.
the only thing i could come up with it training an AI to recognise the
specific region where it might occur, but that would take up too much
resources to train for me :)
my question, does anybody have a working solution for targeting this
problem?
or should i just let it go.
Maarten
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