Garbage matte

A rough matte used to exclude parts of an image that another process, such as bluescreen, would not remove.

A "garbage matte" is often hand-drawn, sometimes quickly made, used to exclude parts of an image that another process, such as bluescreen, would not remove. The name stems from the fact that the matte removes "garbage" from the procedurally produced image. "Garbage" might include a rig holding a model, or the lighting grid above the top edge of the bluescreen.

Mattes that do the opposite, forcing inclusion of parts of the image that might otherwise have been removed by the keyer, such as too much blue reflecting on a shiny model ("blue spill"), are often called "holdout mattes", and can be created with the same tool.

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Adapted from content published on wikipedia.org
Last modified on November 8, 2020, 6:10 pm
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