Editing Chroma subsampling (section)

==History==
{{Unreferenced section|date=July 2022}}
Chroma subsampling was developed in the 1950s by [[Alda Bedford]] for the development of color television by [[RCA]], which developed into the [[NTSC]] standard; luma–chroma separation was developed earlier, in 1938 by [[Georges Valensi]]. Through studies{{Which|date=July 2022}}, he showed that the human eye has high resolution only for black and white, somewhat less for "mid-range" colors like yellows and greens, and much less for colors on the end of the spectrum, reds and blues.{{Clarify|reason=High resolution in what domain?|date=July 2022}} This knowledge allowed RCA to develop a system in which they discarded most of the blue signal after it comes from the camera, keeping most of the green and only some of the red; this is chroma subsampling in the [[YIQ]] color space and is roughly analogous to 4:2:1 subsampling, in that it has decreasing resolution for luma, yellow/green, and red/blue.