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Old 18th January 2020, 10:37   #66  |  Link
nji
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Join Date: Mar 2018
Location: Germany
Posts: 201
Quote:
Originally Posted by redfordxx View Post
If the wobbling is panning and tilting the camera... or as I said rotation around x and y axis...
Slowly please!
That's my concretization of the effect I am adressing here.
(I'm no native speaker so my words my not always hit.
And "wobbling" maybe was even wrong, as "wobbling" seems to be the same than "shaking".
I tried to find a better fitting word, it that was (see above) "kneads within".)
This effect occurs - to my observation - allways if you 2D deshake a large fov movie. (I wonder how often I wrote this expression in this thread)

Quote:
Originally Posted by redfordxx View Post
Can someone stronger than me in math help me?
To say it explicitly: That won't be me.
As I don't know enough either.
And the answers (kindly by shekh and wonkey_monkey) gave me ever more questions.

Quote:
Originally Posted by redfordxx View Post
When I rotate camera precisely around x axis...
...does quad help me with symetric transform (zoom bottom or top of the image) to compensate completely...or there is some curve involved?
quad is Avisynth I don't know anything about (& different sub forum).
But if it does simply resize lines wrt to a reference line, then it will be correct only for fov = 0.
(No math, but just simple imagination )

Sorry, but I'm at a loss like you. Can't help any better.
Tried to contribute by describing an effect that possibly could be enhanced.
Ran against walls.
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