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Create a mask from a color channel?

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Kevin Camin
Create a mask from a color channel?
on Mar 18, 2011 at 1:13:00 pm

I am looking to pull the gray scale image from a specific color channel. Is there a way to do this in AE?


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Joey Foreman
Re: Create a mask from a color channel?
on Mar 18, 2011 at 1:27:38 pm

Something like the Set Matte effect?

Joey Foreman
Editor/Compositor/VFX Artist


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Kevin Camin
Re: Create a mask from a color channel?
on Mar 18, 2011 at 3:56:37 pm

Sort of.

I want a filter to turn my image into a gray scale image based on a color channel; like in Photoshop when you view only one color channel. My plan is to then further work on that gray scale image with levels and then use it for a luma matte.


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Dave LaRonde
Re: Create a mask from a color channel?
on Mar 18, 2011 at 4:03:34 pm

Acouple of instances of the Shift Channel effect combined with Levels ought to do the trick.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Kevin Camin
Re: Create a mask from a color channel?
on Mar 18, 2011 at 4:28:11 pm

Thanks, Dave. Works perfectly!


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