An effect which lets you extract a mask (matte) from an existing image by using a color key.
This effect starts out in "Setup Mode" (see below for details). Once an appropriate color key is selected, disable Setup Mode to view the actual effect.
Effect Parameters
Presets
Presets contain a snapshot of the plug-in parameters. The Presets control lets you choose among one of the presets built into the plug-in, save current parameter values to a preset file, or load an existing preset file from disk.
A preset file saved to disk via the "Save As" button can be loaded from another instance of the same plug-in by clicking the "Open" button. Presets generated in one host can also be loaded from the same plug-in when used in a different host.
Setup Mode
While this parameter is enabled, the original image is displayed. While in "Setup Mode", it is easier to pick an appropriate color key by using the eye dropper tool.
Color Key
The color key used to extract the mask from the rest of the image.
Tolerance
Controls the tolerance of the color keying algorithm.
Sharpness
Controls the sharpness of the area defined by the color keying algorithm.
Invert Mask
Inverts the colors used by the mask (black and white).
Color Space
This parameter allows you to choose a working color space for the effect. When the “Linear” option is selected, the plug-in will convert all color values to a non-gamma-corrected format. When the “Uncorrected” option is selected, the color values supplied by the host will be used directly, without conversion. It may help to choose “Uncorrected” when dealing with smooth gradients or vector-art backgrounds, or if you have already applied gamma correction to your source media in a previous step of your workflow.