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They are identical OETF based on a gamma curve and used for SDR-TV. [3] [2] [4] BT.1886: The ITU-R Recommendation BT.1886 is the reference EOTF of Standard Dynamic Range TV (SDR). [5] sRGB: sRGB defines a transfer function based on a gamma curve and used for monitors, printers and the Web. sRGB is standardized as IEC 61966-2-1:1999 [6]
The sRGB standard defines the chromaticities of the red, green, and blue primaries, the colors where one of the three channels is nonzero and the other two are zero.The gamut of chromaticities that can be represented in sRGB is the color triangle defined by these primaries, which are set such that the range of colors inside the triangle is well within the range of colors visible to a human ...
The dynamic range that can be perceived by the human eye in a single image is around 14 stops. [10] SDR video with a conventional gamma curve and a bit depth of 8-bits per sample has a dynamic range of about 6 stops, assuming a luminance quantisation threshold of 5% is used. [10]
sRGB was created after the early development of Rec.709. The creators of sRGB chose to use the same primaries and white point as Rec.709, but changed the tone response curve (sometimes referred to as gamma) to better suit the intended use in offices and brighter conditions than television viewing in a dark living room. [citation needed]
The CIE 1931 color space standard defines both the CIE RGB space, which is a color space with monochromatic primaries, and the CIE XYZ color space, which is functionally similar to a linear RGB color space, however the primaries are not physically realizable, thus are not described as red, green, and blue. M.A.C. is not to be confused with MacOS.
BT.1886 EOTF is as follows: [1] = ([(+),]) where is the screen luminance, in cd/m 2.; is the input video signal level, in the range [,].; is the exponent of the power function and equal to 2.4
It is derived from the CIELUV space, usually based on the 2° observer and the standard Illuminant D65 representing daylight. h uv is an angle that is normally given in degrees. L* is in the range 0 to +100. C* uv describes the colorfulness and can range from 0 to a couple hundreds. Colors out of the sRGB gamut should specify a CIELCh uv value.
The perceptual quantizer (PQ), published by SMPTE as SMPTE ST 2084, [1] is a transfer function that allows for HDR display by replacing the gamma curve used in SDR ...