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How Video Works, 3rd Edition by Vance Piccin, Diana Weynand

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Glossary

4:2:0 A chroma subsampling scheme. For every four samples of luminance taken, two are taken for each color difference signal, but only on every other scan line. (See 4:2:2.)

4:2:2 A chroma subsampling scheme. For every four samples of luminance taken, two are taken for each of the color difference signals on each scan line.

4:4:4 A chroma subsampling scheme. For every four samples of luminance taken, four are taken for each of the color difference signals on each scan line.

Active Video The portion of the video signal that contains program material.

Additive Color System The color system in which adding all colors together produces white. It is an active color system in that the object being viewed is generating the visible light ...

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