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Surpress color on bottom layer based on edges of top layer?

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Josh Pigford
Surpress color on bottom layer based on edges of top layer?
on Jun 18, 2012 at 8:42:35 pm

Here's a screenshot of the issue:



In the main photo you can see around the edges there is some green bleeding through.

What we had were keying cards with tracking marks on them and I ultimately just pulled corner pin data from the tracks and laid footage on top of those.

But when I turn on motion blur for the top footage, the green from the key card shows through.

So, is there a way to surpress that green color based just on the overlaying footage since the boundaries of the footage are already set (vs. creating and tracking separate mattes)?


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Roland R. Kahlenberg
Re: Surpress color on bottom layer based on edges of top layer?
on Jun 18, 2012 at 9:57:00 pm

Remove the MB in this comp. Nest this comp and apply CC Force MB.

HTH
RoRK

Intensive AE & Mocha Training in Singapore and Malaysia
Adobe ACE/ACI (version 7) & Imagineer Systems Inc Approved Mocha Trainer


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Dan Fredley
Re: Surpress color on bottom layer based on edges of top layer?
on Jun 19, 2012 at 3:57:03 am

A few other tricks I use to avoid adding motion blur to the entire shot:

  • Make the corner pin a little bigger than the area you want to cover.
  • Corner pin a solid color underneath that matches the frame's color WITHOUT motion blur--feather the edge to blend in with outer edge. Animate opacity and mask as needed.
  • Use a slightly bigger corner pin solid color underneath that matches the frame's color WITH motion blur--feather the edge to blend in with outer edge. Animate opacity and mask as needed.
  • Isolate and color correct the green fringe using hue/saturation to be closer to the frame's color or the image color.
  • Photoshop a whole new picture frame, then corner pin the new frame along with the new photo. Roto out the fingers. Extract shadows/reflections as needed.


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