https://nginx-develop-nfsa2.govcms7.amazee.io/sites/default/files/2024-04/Singoring%201000x745.jpg
Luminance
Light Measure of brightness (1985). The measured value of brightness; reflected light measured on motion picture screens as footlamberts or candelas per square meter.
The luminance signal is formed by combining a proportion of 30% red, 59% green and 11% blue from the colour signal.
This combined output becomes the luminance (brightness/ monochrome) signal. It is written as Y. In TV usually derived from the RGB signals originating from a camera or telecine, by a matrix or summation.
References
Case, D., 1985, Motion Picture Film Processing, Media Manuals, Focal Press, London, Boston
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.