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The white point of an illuminant is the chromaticity of a white object under the illuminant, and can be specified by chromaticity coordinates, such as the x, y coordinates on the CIE 1931 chromaticity diagram (hence the use of the relative SPD and not the absolute SPD, because the white point is only related to color and unaffected by intensity ...
A comparison between a typical normalized M cone's spectral sensitivity and the CIE 1931 luminosity function for a standard observer in photopic vision. In the CIE 1931 model, Y is the luminance, Z is quasi-equal to blue (of CIE RGB), and X is a mix of the three CIE RGB curves chosen to be nonnegative (see § Definition of the CIE XYZ color space).
The CIE chromaticity coordinates are given for both the 2 degree field of view (1931) and the 10 degree field of view (1964). [1] The color swatches represent the color of each white point, automatically calculated by Wikipedia using the Color temperature template.
The CIE chromaticity coordinates are given for both the 2 degree field of view (1931) and the 10 degree field of view (1964). [30] The color swatches represent the color of each white point, automatically calculated by Wikipedia using the Color temperature template.
That measured white point was then adjusted to be close to, but not on, the CIE daylight locus. The CCT is close to 6000k, with CIE 1931 xy chromaticities of ( 0.32168 , 0.33767 ) {\displaystyle (0.32168,0.33767)} .
Both use the same color primaries and white point, but different transfer functions, as HDTV is intended for a dark living room while sRGB is intended for a brighter office environment. [citation needed] The gamut of these spaces is limited, covering only 35.9% of the CIE 1931 gamut. [4]
BT.709 primaries shown on the CIE 1931 x, y chromaticity diagram. All chromaticities of the BT.709 color gamut fall within the triangle that connects the primaries. This includes Illuminant D65, the white point.
The CIE 1931 colour space chromaticity diagram with wavelengths in nanometers.The colors depicted depend on the color space of the device on which the image is viewed.. The International Commission on Illumination (usually abbreviated CIE for its French name Commission internationale de l'éclairage) is the international authority on light, illumination, colour, and colour spaces.