Chroma key
From The Art and Popular Culture Encyclopedia
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Chroma key compositing, or chroma keying, is a visual effects / post-production technique for compositing (layering) two images or video streams together based on color hues (chroma range). The technique has been used heavily in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture and videogame industries. A color range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene. The chroma keying technique is commonly used in video production and post-production. This technique is also referred to as color keying, colour-separation overlay (CSO; primarily by the BBC.
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See also
- Compositing
- Drew Carey's Green Screen Show
- Federal Standard 1037C
- Filmmaking
- Film production
- Front projection effect
- Live action
- Live action/Animation
- Matte (filmmaking)
- Motion control photography
- Muslin
- Optical printer
- Primatte chromakey technology
- Rear projection effect
- Reverse bluescreen
- Schüfftan process
- Signal processing
- Sodium vapor process
- Special effects
- Video switcher
- Virtual set
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