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International Commission on Illumination

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CIExy1931

The CIE 1931 color space chromaticity diagram with wavelengths in nanometres. 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, color, and color spaces. It was established in 1913 as a successor to the Commission Internationale de Photométrie and is today based in Vienna, Austria.

OrganizationEdit

The CIE has seven active divisions, each of which establishes technical committees to carry out its program under the supervision of the division's director:

  1. Vision and Color
  2. Measurement of Light and Radiation
  3. Interior Environment and Lighting Design
  4. Lighting and Signalling for Transport
  5. Exterior Lighting and Other Applications
  6. Photobiology and Photochemistry
  7. General Aspects of Lighting (Inactive)
  8. Image Technology

MilestonesEdit

  • In 1964 the 10° CIE standard observer and its corresponding color matching functions as well as the new standard daylight illuminant D6500 were added, as well as a method for calculating daylight illuminants at correlated color temperatures other than 6500 kelvin.
  • In 1976, the commission developed the CIELAB and CIELUV color spaces, which are widely-used today.
  • Based on CIELAB, color difference formulas CIEDE94 and CIEDE2000 were recommended in the corresponding years.

See alsoEdit

ReferencesEdit

  1. Troland, L. T. (August 1922). Report of Committee on Colorimetry for 1920–21. Journal of the Optical Society of America 6 (6): 527–96. The report defined color as follows: "Color 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."
  2. Jones, L. A. (1943). Historical background and evolution of the colorimetry report. Journal of the Optical Society of America 33 (10): 534–43.

External linksEdit



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