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11.2 MATTE
Figure 170
The term Matte refers to a black and white representation defining transparent (background)
and opaque (foreground) parts of the image during compositing. Portions of the matte that are
grey are treated as semi-transparent, which is very useful in progressively smoothing edges
between foreground source material and inserted background imagery.
TriCaster’s ‘matte’ is a digital version of this traditional tool. The controls under the Matte label,
as you would expect, allow you to define and adjust the matte for the corresponding video input.
11.2.1 COLOR
Initially, LiveMatte removes a specific color from the foreground image. This color is chosen
using the Color button.
To choose this key color, click on the Color button (Figure 170) and keep the mouse button
depressed. Drag the
eyedropper tool over one of the video monitors to choose the color you
wish to remove and then release it.
The neighboring ‘color well’ is updated to show the color selected.