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International Commission on Illumination

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International Commission on Illumination
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{{short description|International authority on light, illumination, color, and color spaces}}







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File:CIExy1931.png|thumb|right|The CIE 1931 colour space chromaticity diagram with wavelengths in nanometers. The colours depicted depend on the colour 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. It was established in 1913 as a successor to the Commission Internationale de Photométrie and is today based in Vienna, Austria. The President from 2015 is Yoshihiro Ohno from the US.CIE Board of Administration. Retrieved 07/07/2015.

Organization

The CIE has six divisions, each of which establishes technical committees to carry out its program under the supervision of the division's director:
  1. Division 1: Vision and Colour
  2. Division 2: Physical Measurement of Light and Radiation
  3. Division 3: Interior Environment and Lighting Design
  4. Division 4: Transportation and Exterior Applications
  5. Division 6: Photobiology and Photochemistry
  6. Division 8: Image Technology
Division 5 (Exterior Lighting and Other Applications) and Division 7 (General Aspects of Lighting) are inactive today.

Milestones

last=Troland, Leonard T. Troland, Journal of the Optical Society of Americaissue=6, 527–96, August 1922url=https://zenodo.org/record/1533884, The report defined colour as follows: "Colour is the general name for all sensations arising from the activity of the retina of the eye and its attached nervous mechanisms, this activity being, in nearly every case in the normal individual, a specific response to radiant energy of certain wave-lengths and intensities." the CIE convened its eighth session in 1931, with the intention of establishing an international agreement on colorimetric specifications and updating the OSA's 1922 recommendations based on the developments during the past decade.L. A.>LAST=JONES, Loyd A. Jones, Historical background and evolution of the colorimetry report, Journal of the Optical Society of Americaissue=10, 534–43, 1943Cambridge, United Kingdom, concluded with the formalization of the CIE 1931 colour space>CIE 1931 XYZ colour space and definitions of the 1931 CIE 2° CIE 1931 colour space#CIE standard observer with the corresponding CIE 1931 color space#Color matching functions>colour matching functions, and standard illuminants A, B, and C.
  • In 1964 the 10° CIE standard observer and its corresponding colour matching functions as well as the new standard daylight illuminant D6500 were added, as well as a method for calculating daylight illuminants at correlated colour temperatures other than 6500 kelvins.
  • In 1976, the commission developed the CIELAB and CIELUV colour spaces, which are widely used today.
  • Based on CIELAB, colour difference formulas CIEDE94 and CIEDE2000 were recommended in the corresponding years.


See also

References

{{reflist}}

External links

{{Color space}}{{Color topics}}

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