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Sets the color method to use for pixels where the alpha of the Screen Matte has been modified: White specks in the black matte are absorbed by the surrounding black areas.
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Removes isolated spots of white in a black matte by simplifying the matte. Black specks in the white matte are absorbed by the surrounding white areas. Removes isolated spots of black in a white matte by simplifying the matte. For example, softness could be used on a very harsh matte pulled for use as an inside matte further down the tree. Note:This control should not normally be used as eroding edges can produce a very poor key.Ĭontrols the amount of blur applied to the matte. Either grow (if greater than zero) or shrink (if less than zero) the alpha in the Screen Matte at a sub-pixel level. Sets the cut off point above which alpha values in the Screen Matte are set to the white point.Īllows edge detail to be restored after clipping the Screen Matte too aggressively using the Clip Black and Clip White controls.Īdjusts alpha values in the Screen Matte. Note:Adjusting this control too aggressively can cause hard edges between the foreground and background. Sets the cut off point below which alpha values in the Screen Matte are set to zero. If you’re keying digital video or grainy footage, you might get better results if you adjust this control slightly. When disabled, set the Despill Bias color separately.Īdjusts how much you want to soften the foreground image used to generate the key. When enabled, use the Alpha Bias color as the Despill Bias color. Note:This control is disabled unless Use Alpha Bias for Despill is disabled.
ADOBE KEYLIGHT 1.2 EDGE SKIN
The most useful colors to pick for Despill Bias are often hair colors and skin tones. Pick the color from the part of the foreground that is affected.Īdjusts the Despill Bias to remove any remaining spill from around the foreground image. If the key is not working too well with these settings, try setting the balance to about 0.05, 0.5 and 0.95 and see what works best.Īdjusts the Alpha Bias in case your screen color isn’t purely blue or green and is causing parts of the foreground image to become transparent. Generally speaking, blue screens tend to work best with a balance of around 0.95 and green screens with a balance of around 0.5. Sets the balance point for the image to key. Sets the screen color to become transparent, usually blue or green background.Īdjusts how much of the screen color is removed to make the screen matte. If you’re using premultiplied images, you should leave this enabled. When disabled, the key result is not unpremultiplied.