BS EN ISO/CIE 11664-1:2019
Colorimetry CIE standard colorimetric observers
| Standard number: | BS EN ISO/CIE 11664-1:2019 |
| Pages: | 44 |
| Released: | 2019-07-24 |
| ISBN: | 978 0 539 05345 6 |
| Status: | Standard |
BS EN ISO/CIE 11664-1:2019
This standard BS EN ISO/CIE 11664-1:2019 Colorimetry is classified in these ICS categories:
- 17.180.20 Colours and measurement of light
This document specifies colour-matching functions for use in colorimetry. Two sets of colour-matching functions are specified.
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Colour-matching functions for the CIE 1931 standard colorimetric observer.
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.
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Colour-matching functions for the CIE 1964 standard colorimetric observer.
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.