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Y/c.
| CCTV glossary (глоссарий терминов по видеонаблюдению) |
A video format found in super-vhs video recorders. luminance is marked with y and is
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Chroma key (color key), английский
- A video key effect in which one video signal is inserted in place of areas
- A video key effect in which one video signal is inserted in place of areas of a particular color in another video signal.
Color difference signal, английский
- A video color signal created by subtracting luminance and/or color
- A video color signal created by subtracting luminance and/or color information from one of the primary color signals (red, green or blue). in the betacam color difference format, for example, the luminance (y) and color difference components (r–y and b–y) are derived as follows: y = 0.3 red + 0.59 green + 0.11 blue r–y = 0.7 red – 0.59 green – 0.11 blue b–y = 0.89 blue – 0.59 green – 0.3 red the g-v color difference signal is not created because it can be reconstructed from the other three signals. other color difference conventions include smpte, ebu-n1 0 and mii. s should not be referred to as component video signals. that term is reserved for the rgb color components. in informal usage, the term “component video” is often used to mean color difference signals.
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