Blue-screen and green-screen compositing have become more and more popular, with higher-quality prosumer DV cameras and video editing software becoming more accessible. But sometimes stuff gets in the way; you want to edit out something that falls in front of or next to your blue screen. A simple crop or mask of the scene might eliminate the majority of the unwanted materials. If the shot has too much movement in an asymmetrical pattern or was shot at an angle in the frame, then a combination of techniques, such as garbage mattes and rotoscoping, may be necessary.
What Is a Garbage Matte?
The Static Garbage Matte: Defining the Matte's Boundaries The Garbage Matte in Motion Preparing Frames for Rotoscoping Bringing Matte Techniques Together
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