luminance signal

luminance signal

[′lü·mə·nəns ‚sig·nəl]
(communications)
The color television signal that is intended to have exclusive control of the luminance of the picture. Also known as Y signal.
References in periodicals archive ?
(3) 4:2:2:A method of representing video that records the luminance signal and corresponding color signal for a single scan line in a 4:2 ratio, ensuring excellent color fidelity and limiting color degradation during multiple encoding and decoding steps.
The unit features Composite video outputs operating at 1.0Vp-p (75 ohm) Sync Negative, S video outputs with Luminance Signal atl.0Vp-p (75ohm load)and Color Signal at 0.286Vp-p (75ohm load), and Component video outputs--Y Level at 1Vp-p (75ohm load), Pb Level at 0.7Vp-p (75ohm load), and Pr Level at 0.7Vp-p (75 ohm load).
Error metrics are only computed on the luminance signal, so the pixel values f(i,j) range between black (0) and white (255).
The inclusion of color at 3.58 MHz means information must be taken away from the luminance signal. That loss of information results in a loss of picture details.
The relative contributions of color and luminance signals towards the visuomotor localization of targets in human peripheral vision.