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Solve natural light flickering

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Michael Cinquin
Solve natural light flickering
on Aug 5, 2013 at 10:32:14 am

Hi Smoke Artists

as explained here : http://forums.creativecow.net/thread/142/880525 I have sample footage on http://www.michaelcinquin.com/ex1_flicker.mov that I was not able to fix with de-flicker plugins (Sapphire, BCC, Furnace...).

I would be interested if somebody could share to solve this type of problems, or if somebody here is capable of solving and could name her price.

thanks

Michael Cinquin


Final Cut Pro - Avid Media Composer editor
DaVinci colorist
Color profiles for Color
http://www.michaelcinquin.com/tools : tools for FCP | Color | RED | subtitles | Cinema Tools | Timecode - Keycode calculator | DCP versioning and subtitling


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Grant Kay
Re: Solve natural light flickering
on Aug 5, 2013 at 2:15:35 pm

Hi Michael,

It almost looks like an electrical disruption or something.

Regardless, one thing to point out is that it is a consistent pulse. That could be used to your advantage. By any chance was a clean black, grey or white frame shot with the problem. Since the deflickering tools are not working, I was thinking about trying to see if it was possible to pull a faint matte of the pulse and try correct that.

So it wouldn't remove the pulsing entirely but certainly lessen the effect.

This is aside from rotoing everything out and rebuilding entire 3D environments from stills in Smoke :)

Just a thought.

Regards
Grant

Check out the Smoke Learning Channel

Youtube - http://www.youtube.com/smokehowtos
or search for the Smoke Learning Channel on iTunes
Follow me on twitter @discreetuk


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Michael Cinquin
Re: Solve natural light flickering
on Aug 5, 2013 at 5:10:45 pm

Hi Grant

thanks for shiming in. The faint matte definitely looks like a good idea, and one of those areas where Smoke stands out.

I tried to PM you of find your email, but didn't, so... :
Would you be available to work on this ?
Perhaps your work on this could both be billed and used for your training material (tbc with the film producer) ?
Or if a Smoke artist (reading this or that you would recommend) could implement the faint matte way, that would be great.

Also, it would be great if you could outline grossly the workflow for pulling such a matte !

cheers

Michael


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Grant Kay
Re: Solve natural light flickering
on Aug 6, 2013 at 8:29:08 am

Hi Michael,

It was just a thought I had because a the variance in luminance's caused by the flicker.

You can mail me at grant.kay @ autodesk.com (minus the spaces.)

I had two approaches in mind.

1. Apply a luminance matte to the image and crush it as much as possible to isolate the luminance difference. This might work if you have shot a evenly light grey plate . Take that matte and attempt to correct.

2. Create a clean plate of this image, match the movement to the original and try pull a difference matte. This might force a matte with the interference. Degrain would probably be needed as well. Might be more successful on a static shot rather than pan. And than correct.

Lots of potential but no guarantees ;)

Regards
Grant

Check out the Smoke Learning Channel

Youtube - http://www.youtube.com/smokehowtos
or search for the Smoke Learning Channel on iTunes
Follow me on twitter @discreetuk


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