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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.
An illuminant is characterized by its relative spectral power distribution (SPD). 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 ...
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)} .
English: Diagram of the CIE 1931 color space that shows the Rec. 601 (SDTV) color space in the triangle. Black corresponds to 625 line systems, white to 525 lines. Rec. 601 uses Illuminant D65 for the white point.
The white point coordinates above define this white ... and 33.5% of the CIE 1931 xy diagram. [21 ... picture rendering, image state, and Rec. 709. May, 2008.
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.