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Activity Forums Adobe After Effects How to show edge – no edge effect?

  • How to show edge – no edge effect?

    Posted by Tonio Queria on April 22, 2009 at 3:21 pm

    How can I automaticaly isolate the edge in an image? I’m changing a sky behind a tree from white clouds to an image of blue sky with clouds. The integration is pretty good. I just cant get rid of the last little white edge that I don’t want to mask out so as not to loose too much details in the tree. I want to isolate the edge between the dark tree and the white sky to color correct that into blue submission. Strangely typing edge in the effects search didnt bring up any native AE effects. Or am I missing something? Isn’t it a basic photoshop effect? Any help appreciated.

    Tonio Queria replied 17 years ago 27,900 Members · 1 Reply
  • 1 Reply
  • Tonio Queria

    April 22, 2009 at 4:01 pm

    Yes, I used a second key under the main one to color correct the background.
    You’re right I didn’t think using an edge type filter would produce a lot of flicker when playing.
    Thank you.

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