BS EN ISO/CIE 11664-3:2019 – TC:2020 Edition
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Tracked Changes. Colorimetry – CIE tristimulus values
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 40 |
This document specifies methods of calculating the tristimulus values of colour stimuli for which the spectral distributions are provided. These colour stimuli can be produced by self-luminous light sources or by reflecting or transmitting objects.
This document requires that the colour stimulus function be tabulated at measurement intervals of 5Â nm or less in a wavelength range of at least 380Â nm to 780Â nm. Extrapolation methods are suggested for cases where the measured wavelength range is less than 380Â nm to 780Â nm.
The standard method is defined as summation at 1Â nm intervals over the wavelength range from 360Â nm to 830Â nm. Alternative abridged methods are defined for larger intervals (up to 5Â nm) and shorter ranges (down to 380Â nm to 780Â nm). The alternative methods are to be used only when appropriate and when the user has reviewed the impact on the final results.
This document can be used in conjunction with the CIEÂ 1931 standard colorimetric observer or the CIEÂ 1964 standard colorimetric observer.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 24 | National foreword |
| 26 | European foreword |
| 28 | Foreword |
| 29 | Introduction |
| 31 | 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and abbreviations |
| 33 | 5 Standard method 5.1 General 5.2 Calculation of tristimulus values |
| 34 | 5.3 Normalizing constant for self-luminous light sources 5.4 Normalizing constant for reflecting or transmitting objects |
| 35 | 5.5 CIE 1964 standard colorimetric system 6 Abridged methods 6.1 General 6.2 Abridged method for data at 5 nm intervals or less 6.3 Abridged method for 10 nm or 20 nm data for reflecting or transmitting objects |
| 36 | 6.4 Abridged method for 10 nm or 20 nm data for self-luminous light sources 7 Supplementary treatment of input data 7.1 General |
| 37 | 7.2 Extrapolation 7.3 Interpolation 7.4 Bandwidth |
| 38 | 8 Chromaticity coordinates 9 Numerical procedures 10 Presentation of results |
| 39 | Bibliography |
