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Old 8th August 2016, 16:59   #21  |  Link
shekh
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This is göynük canyon, turkey.

For skew I have some ideas in todo list. It is quite easy to match frames to each other using 2 sets of parameters instead of 1 (same as deshaker).
Then it is quite easy to try full compensation matching all frames to single reference frame, this is suitable for shots without motion. This should certainly work, but I am not sure RS is an issue at all with such shots.
The trouble is to build a path when camera moves. I certainly cannot just accumulate differences stacking one frame after another: this works for no-skew mode but with skew included the growing error tears frame apart.
I tried deshaker approach without success (either I did it wrong or did not understand the result), also tried filtered average as immediate reference (same here).
Another idea is to collect frames with lowest skew and use them as references.
First I need better motion data. For this I started to make analyzer
Second problem is to understand what happens. This is hard with real footage. I dont see something simple like skewed pillar, instead the shot just looks "jelly" but I cant tell for each frame where it is wrong.
To some extent I train the math on synthetic RS-skewed shots. This way I can have perfect result to compare with. But I need to go deeper and prepare realistic synthetic shot with motion and shaking similar to reality, and this is damn long task to prepare

For wobble I have no ideas. I suppose it requires different level of enginery (structure from motion etc).
I chose as milestone some piece of footage which has really bad shake but still no wobble.

Btw maybe by the time I finish that, they come up with practical global shutter sensor?
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Old 25th March 2017, 15:50   #22  |  Link
djonline
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shekh, b2kguga. I was used Synthyes too, it works fine on CCD camera (my example https://www.youtube.com/watch?v=wsrs28aUAKw and https://www.youtube.com/watch?v=bxQ8AkyK70k and https://www.youtube.com/watch?v=NTYdAVV71p8) , but it completely unusable on consumer CMOS camera due Rolling Shutter. There is no way to fully eleminate them, so better result for CMOS is to use Warp Stabilizer in Adobe Premiere.

I dont 'like shaked edges in this example of Canyone, it is not usable for me. But I still use deshaker for little shaked video to eleminate small shake, coz Warp is still very slow.
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Old 9th September 2019, 11:22   #23  |  Link
nji
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Hi shekh.

I posted I question to your plugin in another (wrong) thread

https://forum.doom9.org/showthread.p...79#post1884379

Greetings.
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Old 10th September 2019, 12:59   #24  |  Link
shekh
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Quote:
Originally Posted by nji View Post
Hi shekh.

I would like to ask if there is an up-to-date version of your plugin.
(Only the plugin and the needed files for ini etc. for use in VDub2)

I use DeShaker for a long time, but had to make the experience
that with large FOV it produces "wobbling" results (due to the
lack of taking perspective into account) that make the result
worse than the shaking version.

In Deshaker - as a first step - a simple option for FOV
(wide-angle, normal, tele) would be fantastic.
But ... sadly ... DeShaker isn't improved anymore.

As far as I understand the matter, BEFORE phase 1 in DeShaker
there would have to be the perspective correction (panotools etc.?)
and after that to calculate the motion vectors etc.

But maybe your plugin works well enough already?

Greetings! :-)
Hi,
actually the published version is the last one. Any further improvement is in awful "maybe resume later" state.

That said, the last version can do something, I believe, better than deshaker wrt perspective and distortion.
If you really want to use it as is but don't understand the GUI, I can guide you Post your sample.
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Old 11th September 2019, 11:38   #25  |  Link
nji
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Hi shekh.

Thank you for your response and your offer for help.
I'll try on my own first.
And if nothing more helps ... I could read your posted instruction ;-)

Only one thing about the "published version" you mentioned.
It is a collection of a complete (and old) VD version and some other things.
Would it be possible for you to do only the needed files for your tool/ filter in one package/ zip, so that one can easily integrate it into an existing VD2?
That would be nice.

BTW: Strange that there is so few interest in that wonderful quality improvement of deshaking (And ever more the lens correction). As most shaky videos will be taken on a middle FOV, and not FOV=0 (= standard DeShaker without perspective accounting).
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Old 14th September 2019, 10:39   #26  |  Link
nji
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Quote:
Originally Posted by shekh View Post
[...]

Btw maybe by the time I finish that, they come up with practical global shutter sensor?
Please don't forget that most videos VD manipulates are from the past (at least for me it's the case). And all they are taken by "previous" optics/ sensor types.

Last edited by nji; 14th September 2019 at 11:01.
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Old 14th September 2019, 17:55   #27  |  Link
wonkey_monkey
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Quote:
Please don't forget that most videos VD manipulates are from the past
I'm curious to know who's processing videos from the future.
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