Luma (video)

In video, luma ( $Y'$ ) represents the brightness in an image (the "black-and-white" or achromatic portion of the image).^[1]^[2]^[3]^[4] Luma is typically paired with chrominance.^[3]^[4] Luma represents the achromatic image, while the chroma components represent the color information. Converting R′G′B′ sources (such as the output of a three-CCD camera) into luma and chroma allows for chroma subsampling: because human vision has finer spatial sensitivity to luminance ("black and white") differences than chromatic differences, video systems can store and transmit chromatic information at lower resolution, optimizing perceived detail at a particular bandwidth.^[3]

^ Cite error: The named reference :0 was invoked but never defined (see the help page).
^ Cite error: The named reference :1 was invoked but never defined (see the help page).
^ ^a ^b ^c drewbatgit (2021-01-07). "About YUV Video - Win32 apps". learn.microsoft.com. Retrieved 2023-10-27.
^ ^a ^b Telestream (2017). Different color spaces - or how levels go wrong (PDF). Telestream.

[:0-1] Cite error: The named reference :0 was invoked but never defined (see the help page).

[:1-2] Cite error: The named reference :1 was invoked but never defined (see the help page).

[:2-3] rewbatgit (2021-01-07). "About YUV Video - Win32 apps". learn.microsoft.com. Retrieved 2023-10-27.

[:3-4] Telestream (2017). Different color spaces - or how levels go wrong (PDF). Telestream.

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