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Green Screen Optimization

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Jennifer AdamsGreen Screen Optimization
by on Feb 2, 2013 at 10:18:02 pm

Hey guys,

It's my first time using a green screen, and I'm trying to optimize the results. I've attached a small sample from the green-screen sequence. The kid in the foreground is green-screened onto the video, and I've been trying my luck with the settings on Keylighter in order to get rid of the artifacts and weird pixelation around his head line, with very partial success using the Clip Black/White settings. I've also tried applying a simple choker with no luck.

Video: http://reels.creativecow.net/film/green-screen-artifacts

If anyone more experienced can offer any tips, I'd be really grateful!
Thanks a lot!

Jen


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Angelo LorenzoRe: Green Screen Optimization
by on Feb 2, 2013 at 10:41:34 pm

Denoise your footage is you can (I reply heavily on Neat Video for this kind of work) as that will get rid of some of the judder/noise/

Mostly, though you could probably mask around your foreground actor. A semi-tight mask would do the trick and then you could finesse your edges in keylight. Your foreground subject doesn't move a ton, so I think it would be a good first step.

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Angelo Lorenzo

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Todd KoprivaRe: Green Screen Optimization
by on Feb 3, 2013 at 5:54:47 am

Angelo makes some good suggestions, especially regarding creating a garbage matte so that you're only keying the area immediately around your subject.

There are some good resources about keying from Andrew Devis here on the COW:
http://blogs.adobe.com/aftereffects/2011/09/color-keying-tutorials-from-and...

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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Vishesh AroraRe: Green Screen Optimization
by on Feb 3, 2013 at 9:45:39 am

Jennifer

See the tutorial on creating Garbage Matte :

http://tv.adobe.com/watch/creative-cow-after-effects-tutorials/super-tight-...

I also created an example using Autotrace and Color Range Effect to create junk matte.

Check the files :

http://forums.creativecow.net/readpost/2/1030036

http://forums.creativecow.net/readpost/2/1030033

Vishesh Arora
3D and Motion Graphics Artist
Films Rajendra

Blog:
http://digieffects.wordpress.com

2011 3D Demo Reel:








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Jennifer AdamsRe: Green Screen Optimization
by on Feb 3, 2013 at 10:46:05 am

Thanks everyone for the help, I appreciate it!


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Vishesh AroraRe: Green Screen Optimization
by on Feb 3, 2013 at 11:41:25 am

Glad to help

Vishesh Arora
3D and Motion Graphics Artist
Films Rajendra

Blog:
http://digieffects.wordpress.com

2011 3D Demo Reel:








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