Apple Motion 2 - Manual (Page 762)

762 Chapter 10 Using Filters
Backing Color: Pick the backing color for the matte. Use the disclosure triangle to
display Red, Green, Blue, and Alpha sliders for more precise color selection. In addition,
clicking the color well opens the Colors window, which allows you use the color picker
to select a color from the object.
Auto Sample: Automatically samples the dominant color type in the image to be used
for the key. Select Red, Green, or Blue.
Replacement Color: Picks the color to be used to fill in pixels in spill and transition
areas. The intelligent edge smoothing of the Primatte RT filter can take pixel color
values from the background to substitute in spill and transition areas.
Noise Removal: Sets the threshold for noise removal. Values range from 0 to 0.94.
Matte Density: Sets the density of the matte. Values range from 0 to 1. This value
cannot be set to a value lower than Noise Removal.
Spill Suppression: Sets the amount of spill suppression applied to the matte. Values
range from 0 to 1. This value cannot be set to a value lower than Noise Removal.
Dashboard controls
The Dashboard contains the same controls as the Inspector.
An Example Using Primatte RT
Getting the basics down of using Primatte RT is easy. Here’s an example.
To do a simple composite using Primatte RT:
1 Import a background image into your project.
01112.book Page 762 Sunday, March 13, 2005 10:36 PM