ISO/CIE 11664-1:2019(F) Colorim�trie ? Partie 1: Observateurs CIE de r�f�rence pour la colorim�trie

This document was prepared by the International Commission on Illumination (CIE) in cooperation with Technical Committee ISO/TC 274, Light and lighting. This first edition of ISO/CIE 11664-1:2019(F) cancels and replaces ISO_11664-1:2007(F) | CIE S 014-1/F:2007, of which it constitutes a minor revision.-\n--\n-The document has been editorially revised as per current ISO and CIE rules and the references have been updated. The document specifies colour-matching functions for use in colorimetry. Two sets of colour-matching functions are specified:-\n-? Colour-matching functions for the CIE 1931 standard colorimetric observer.-\n-This set of colour-matching functions is representative of the colour-matching properties of observers with normal colour vision for visual field sizes of angular subtense from about 1� to about 4�, for vision at photopic levels of adaptation.-\n-? Colour-matching functions for the CIE 1964 standard colorimetric observer.-\n-This set of colour-matching functions is representative of the colour-matching properties of observers with normal colour vision for visual field sizes of angular subtense greater than about 4�, for vision at sufficiently high photopic levels and with spectral power distributions such that no participation of the rod receptors of the retina is to be expected.