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keying out white backgound.

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Antonio R.Lyonskeying out white backgound.
by on Jan 12, 2017 at 3:16:11 am

so i have this personal project where i need to key out this white background so i could replace the bg obviously with some new backgrounds. Im probably going to be replacing it with some sci fi themed animated dark backgrounds. i was using keylight 1.2 but when i key out the bg some of her skin and clothes are removed. I usually only key out green and when i do its usually a clean and easy easy with minor fixes. I*m not experienced much with roto. I wasn't able to film this myself because shes in Brazil, and im in the us. I wouldn't normally work on footage like this. Is there any techniques that you guys know of that i could use to get a clean key of this footage. im attaching a screen shot, and im using adobe after effects cs6 on pc. i have cc on a pc tablet but i dont think its good enough to render out this video.



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Simon UbsdellRe: keying out white backgound.
by on Jan 12, 2017 at 5:25:24 pm
Last Edited By Simon Ubsdell on Jan 12, 2017 at 5:31:29 pm

Keylight is not suitable for this - it is designed for blue and green screen keying, which is a specialist operation.

You need to use the Luma Key effect.

You might need to think about doing this in a few passes because your white is not very white at all.

Simon Ubsdell
tokyo productions
hawaiki


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Dave LaRondeRe: keying out white backgound.
by on Jan 12, 2017 at 5:36:12 pm

You may also have to build a matte.

There are areas on the subject that are brighter than the background, which probably require an animated mask for the core. You might be able to get away with a combination of Curves or Levels plus a Luma key to build the edge.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Daniel WaldronRe: keying out white backgound.
by on Jan 12, 2017 at 6:29:22 pm

The Extract effect has replaced Luma Key in After Effects. Use this effect to key out the lighter background. You will need to add an inverted mask to the effect around her face so the lighter areas of her skin/eyes aren't also keyed out. Fortunately she is wearing dark clothes and has long dark hair all around, though that shine on top of her head may be a little tricky.


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Simon UbsdellRe: keying out white backgound.
by on Jan 12, 2017 at 6:37:30 pm
Last Edited By Simon Ubsdell on Jan 12, 2017 at 6:38:34 pm

The Luma Key effect is still there.

Extract is just a luma keyer with slightly different controls.

Simon Ubsdell
tokyo productions
hawaiki


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Gijs ten DenRe: keying out white backgound.
by on Jan 13, 2017 at 8:23:10 am

You can try to key out the white with the "Extract" effect but you need to mask a few parts of the face like the eyes and the white parts of the hair.

But maby the Roto brush tool is an option for this. I found a quick tutorial on how it works:






Good luck.


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Antonio R.LyonsRe: keying out white backgound.
by on Jan 13, 2017 at 8:56:31 am

Thank You all for your responses! The Luma/ extract helped a great deal, along with masking.


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