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Luma Key effect
The Luma Key effect keys out all the regions of a layer with a specified luminance or brightness. The layer's quality
setting does not influence the Luma Key effect.
This effect works with 8-bpc and 16-bpc color.
A white background of the original (left and center) is removed using Luma Key (right).
See also
"To key out a luminance value with the Luma Key effect" on page 278
Spill Suppressor effect (Pro only)
The Spill Suppressor effect removes traces of the key color from an image with a screen that has already been keyed
out. Typically, the Spill Suppressor is used to remove key color spills from the edges of an image. Spills are caused by
light reflecting off the screen and onto the subject.
If you are not satisfied with the results from using the Spill Suppressor, try applying the Hue/Saturation effect to a
layer after keying, and then decrease the saturation value to de-emphasize the key color. (See "Hue/Saturation effect"
on page 415.)
This effect works with 8-bpc and 16-bpc color.
The original green key (left) leaves a green glow when keyed out (center). Spill Suppressor removes the glow (right).
See also
"To use the Spill Suppressor effect" on page 277
Matte effects (Pro only)
Matte Choker effect (Pro only)
The Matte Choker effect repeats a sequence of choking and spreading the matte to fill undesired holes (transparent
areas) in opaque regions. The repetition is necessary because the entire matte must be choked and spread; the
spreading fills the hole, but the edges of the matte must be choked back to preserve the matte shape.
This effect works with 8-bpc and 16-bpc color.
ADOBE AFTER EFFECTS 7.0
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