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Brightness. The balance of light and dark shades in an image.
Composite video. A type of video signal that encodes colors, luminance
and sychronization information so it can be carried in one signal.
Contrast. A measure of the luminance differences between the highlights
and shadows of an image. In a high-contrast image, light areas are very
bright and dark areas are very dark.
NTSC. A 525-line video broadcast format developed by the National
Television Standards Committee. NTSC is widely used in North America,
Mexico and Japan.
PAL (Phase Alternation by Line). A 625-line video broadcast format
used in Western Europe, India, China, Australia, New Zealand and parts of
Africa.