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Activity Forums Adobe After Effects Chormakey, almost there, slight green highlights?

  • Chormakey, almost there, slight green highlights?

    Posted by Scott Wright on November 30, 2006 at 10:12 am

    Hi There?

    I am currently producting a series of graphic elements for broadcast, and have got quite a good edge on the the footage that was shot in a green screen studio however the presenter still has some green highlights down one side of her face.

    You can particuarly see in the hair, and on the chin.

    As this is actually on the footage is there an easy way to remove this?

    See above example

    Majorasshole replied 19 years, 5 months ago 3 Members · 3 Replies
  • 3 Replies
  • Barend Onneweer

    November 30, 2006 at 11:24 am

    I’d start with using the ‘Hue Saturation’ effect, selecting the greens and swinging it towards orange or red using the ‘hue’ control.

    It may not have too much effect, but it’s usually the first thing I try.

    Other than that, Keylight has decent edge color correction tools built-in (if you’re using keylight) that will allow you to add some red to the edges to compensate for green spill. It won’t do you any good on the chin though.

    See if you can lift the reds a little on the foreground. It looks as if it could use it.

    And a final tip: invest in some kind of light-wrap tool (I use Key Correct Pro which has one). It allows you to wrap some of the background color around the edges of the foreground, to make the composite more seamless. More important when you need realism, less for these kinds of graphics.

    https://www.redgiantsoftware.com/keycorrect2.html

    Bar3nd

    Raamw3rk – digital storytelling and visual effects

  • Scott Wright

    November 30, 2006 at 11:28 am

    Brilliant, thanks for your reply.

    I am currently using the basic keying that comes with after effects, it does a really good clean edge for the most cases, then use the spill suppressor to “degreen” the edges, it was mostly the parts on her face and hair, as the hair is blonde anyway and has green in it, that causes a problem.

    I will try your suggestions above.

  • Majorasshole

    December 5, 2006 at 5:56 am

    Try the keylight plugin, it is a better keyer just because its spill suppression will get rid of all of those green highlights.

    Next time, if you can, light your green screen with diffused lights, then light your talent seperately. Get your talent 15 feet from the green screen or more, and pull your camera back and zoom in to compensate. That should eliminate all spill except on really shiny clothing like leather, latex and pvc.

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