1、 One or more corrigenda exist with corrections to this document. These can be searched online and ordered free of charge at www.beuth.de July 2011 Translation by DIN-Sprachendienst.English price group 15No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut f
2、r Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.180.20!$sH?“1803728www.din.deDDIN EN ISO 11664-1Colorimetry Part 1: CIE standard colorimetric observers (ISO 11664-1:2007)English translation of DIN EN ISO 11664
3、-1:2011-07Farbmetrik Teil 1: CIE farbmetrische Normalbeobachter (ISO 11664-1:2007)Englische bersetzung von DIN EN ISO 11664-1:2011-07Colorimtrie Partie 1: Observateurs CIE de rfrence pour la colorimtrie (ISO 11664-1:2007)Traduction anglaise de DIN EN ISO 11664-1:2011-07www.beuth.deDocument comprises
4、 pagesIn case of doubt, the German-language original shall be considered authoritative.3406.11 DIN EN ISO 11664-1:2011-07 2 A comma is used as the decimal marker. National foreword collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible G
5、erman body involved in its preparation was the Normenausschuss Farbe (Colour Standards Committee), Joint Working Committee NA 025-00-02 GA Gemeinschaftsarbeitsausschuss FNF/FNL: Farb-metrik. DIN EN ISO 11664 consists of the following parts, under the general title Colorimetry: Part 1: CIE standard c
6、olorimetric observers Part 2: CIE standard illuminants Part 4: CIE 1976 L*a*b* Colour space Part 5: CIE 1976 L*u*v* Colour space and u, v uniform chromaticity scale diagram This standard has been prepared by Technical Committee CIE “International Commission on Illumination” in EUROPEAN STANDARD NORM
7、E EUROPENNE EUROPISCHE NORM EN ISO 11664-1 April 2011 ICS 17.180.20 English Version Colorimetry - Part 1: CIE standard colorimetric observers (ISO 11664-1:2007) Colorimtrie - Partie 1: Observateurs CIE de rfrence pour la colorimtrie (ISO 11664-1:2007) Farbmetrik - Teil 1: CIE farbmetrische Normalbeo
8、bachter (ISO 11664-1:2007) This European Standard was approved by CEN on 17 March 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date list
9、s and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under
10、the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Ge
11、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMU
12、NG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11664-1:2011: EContents DIN EN ISO 11664-1:2011-07 EN ISO 11664-1:2011 (E) 2 Page Foreword Introduction . 1 Scope 4 2
13、Normative references 4 3 Definitions 4 4 Specifications.6 4.1 Colour-matching functions.6 4.2 Spectral chromaticity coordinates.6 5 Derivation of the colour-matching functions for the CIE 1931 standard colorimetric observer6 5.1 Experimental basis 6 5.2 Transformation procedures7 5.3 Transformation
14、properties7 5.4 Comparison with earlier data .7 6 Derivation of the colour-matching functions for the CIE 1964 standard colorimetric observer8 6.1 Experimental basis 8 6.2 Transformation procedures8 6.3 Transformation properties8 6.4 Comparison with earlier data .8 7 Practical application of colour-
15、matching functions for the CIE standard colorimetric observers8 7.1 Obtaining tristimulus values 8 7.2 The basis for integration.9 7.3 Rod activity.9 7.4 The use of restricted data 9 7.5 Standard of reflectance.9 A Bibliography (informative) 32 Tables Table 1 Colour-matching functions and chromatici
16、ty coordinates of CIE 1931 standard colorimetric observer 10 Table 2 Colour-matching functions and chromaticity coordinates of CIE 1964 standard colorimetric observer .21 43nnex Foreword The text of ISO 11664-1:2007 has been prepared by Technical Committee CIE “International Commission on Illuminati
17、on” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11664-1:2011 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publicat
18、ion of an identical text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC sha
19、ll not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Den
20、mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 11664-1:2007 has been app
21、roved by CEN as a EN ISO 11664-1:2011 without any modification. DIN EN ISO 11664-1:2011-07 EN ISO 11664-1:2011 (E) 3 INTRODUCTION Colours with different spectral compositions can look alike. An important function of colorimetry is to determine whether a pair of such metameric colours will look alike
22、. The use of visual colorimeters for this purpose is handicapped by variations in the colour matches made amongst observers classified as having normal colour vision. Visual colorimetry also tends to be time-consuming. For these reasons, it has long been the practice in colorimetry to make use of se
23、ts of colour-matching functions to calculate tristimulus values for colours: equality of tristimulus values for a pair of colours indicates that the colour appearances of the two colours match, when they are viewed in the same conditions by an observer for whom the colour-matching functions apply. T
24、he use of standard sets of colour-matching functions makes the comparison of tristimulus values obtained at different times and locations possible. 1 SCOPE This International Standard specifies colour-matching functions for use in colorimetry. Two sets of colour-matching functions are specified. a)
25、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
26、 of adaptation. b) 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
27、 sufficiently high photopic levels and with spectral power distributions such that no participation of the rod receptors of the retina is to be expected. 2 NORMATIVE REFERENCES The following referenced documents are indispensable for the application of this document. For dated references, only the e
28、dition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. CIE 15:2004. Colorimetry, 3rdedition. CIE 17.4-1987. International lighting vocabulary (ILV) - Joint publication IEC/CIE. 3 DEFINITIONS For the purposes of this Internation
29、al Standard, the following definitions apply. These definitions are taken from CIE 17.4-1987, where other relevant terms will also be found. 3.1 colour stimulus function, () (see ILV 845-03-03) description of a colour stimulus by the spectral concentration of a radiometric quantity (such as radiance
30、 or radiant power) as a function of wavelength 3.2 relative colour stimulus function, () (see ILV 845-03-04) relative spectral power distribution of the colour stimulus function DIN EN ISO 11664-1:2011-07 EN ISO 11664-1:2011 (E) 4 3.3 metameric colour stimuli; metamers (see ILV 845-03-05) spectrally
31、 different colour stimuli that have the same tristimulus values 3.4 monochromatic stimulus: spectral stimulus (see ILV 845-03-08) stimulus consisting of a monochromatic radiation 3.5 equi-energy spectrum (see ILV 845-03-14) spectrum of a radiation whose spectral concentration of a radiometric quanti
32、ty as a function of wavelength is constant throughout the visible region 3.6 additive mixture of colour stimuli (see ILV 845-03-15) method of stimulation that combines on the retina the actions of various stimuli in such a manner that they cannot be perceived individually 3.7 colour matching (see IL
33、V 845-03-16) action of making a colour stimulus appear the same in colour as a given colour stimulus 3.8 trichromatic system (see ILV 845-03-20) system for specifying colour stimuli in terms of tristimulus values based on matching colours by additive mixture of three suitably chosen reference colour
34、 stimuli 3.9 reference colour stimuli, R, G, B; X, Y, Z; X10, Y10, Z10; etc. (see ILV 845-03-21) set of three colour stimuli on which a trichromatic system is based 3.10 tristimulus values, R, G, B; X, Y, Z; X10, Y10, Z10; etc. (see ILV 845-03-22) amounts of three reference colour stimuli, in a give
35、n trichromatic system, required to match the colour of the stimulus considered 3.11 colour-matching functions, ( ) ( ) ( ) bg , ; r ( ) ( ) ( ) zyx , ; ( ) () ()10z ; etc. tristimulus values of monochromatic stimuli of equal radiant power of reference r-matching functions 1010, yx(see ILV 845-03-23)
36、 3.12 CIE 1931 standard colorimetric system (X, Y, Z) (see ILV 845-03-28) system for determining the tristimulus values of any spectral power distribution using the set colour stimuli X, Y, Z, and the three CIE colou() () () zyx , adopted by the CIE in 1931 and defined in this standard hree CIE colo
37、ur-matching functions 3.13 CIE 1964 standard colorimetric system (X10, Y10, Z10) (see ILV 845-03-29) system for determining the tristimulus values of any spectral power distribution using the set of reference colour stimuli X10, Y10, Z10, and the t() () ()101010, zyx adopted by the CIE in 1964 and d
38、efined in this standard 3.14 CIE colour-matching functions (see ILV 845-03-30) functions () () () zyx , in the CIE 1931 standard colorimetric system and () () ()101010, zyx in the CIE 1964 standard colorimetric system 3.15 CIE 1931 standard colorimetric observer (see ILV 845-03-31) ideal observer wh
39、ose colour-matching properties correspond to the CIE colour-matching () () () zyx , functions 3.16 CIE 1964 standard colorimetric observer (see ILV 845-03-32) ideal observer whose colour-matching properties correspond to the CIE colour-matching functions () ( ) ()101010, zyx DIN EN ISO 11664-1:2011-
40、07 EN ISO 11664-1:2011 (E) 5 3.17 chromaticity coordinates, r, g, b; x, y, z; x10, y10, z10; etc. (see ILV 845-03-33) ratio of each of a set of three tristimulus values to their sum ticity coordinates, r(), g(), b(); x(), y(), z(); x10(), y10(), z10(); etc. photometric conditions and mis chosen so e
41、al isotropic diffuser with a reflectance equal to unity s 3.18 spectral chroma(see ILV 845-03-36) chromaticity coordinates of monochromatic stimuli 3.19 spectral luminous efficiency, V() (see ILV 845-01-22) ratio of the radiant flux at wavelength mto that at wavelength , such that both radiations pr
42、oduce an equal visual response under specifiedthat the maximum value of this ratio is equal to 1 3.20 perfect reflecting diffuser (see ILV 845-04-54) id4 SPECIFICATIONS 4.1 Colour-matching functionThe colour-matching functions () ( ) ( ) zyx , of the CIE 1931 standard colorimetric observer are defin
43、ed by the values given in Table 1, and those ( ) ( ) ( )101010, zyx of the CIE 1964 standard colorimetric observer are defined by the values given in Table 2. The values are given at 1 nm wavelength intervals from 360 nm to 830 nm. If values are required at closer 10 10 10ese have been derived from
44、the appropriate colour-matching functions by forming the ratios: wavelength intervals than 1 nm, they should be derived by linear interpolation. 4.2 Spectral chromaticity coordinates Tables 1 and 2 also give values for the spectral chromaticity coordinates, x(), y(), z(); x (), y (), z (); th()()()
45、() ()zyxx+= x , ()( )() () ()zyxy+= y and ()()() () ()zyxz+= z ()( )() () ()10101010()()() () ()10101010zyx +10xx= , 10yzyxy+= and ()()() () ()1010101010zzyxz+= Note: All wavelengths are for standard air. our-matching functions, 5 DERIVATION OF THE COLOUR-MATCHING FUNCTIONS FOR THE CIE 1931 STANDARD
46、 COLORIMETRIC OBSERVER 5.1 Experimental basis The CIE 1931 col ( ) ( ) ( ) zyx , were derived from experimental work carried out by Wright (1928-1930) and by Guild (1931) in which a total of 17 observers uli of the spectrum, over the range of about 400 nm to matched the monochromatic stim700 nm, wit
47、h additive mixtures of red, green and blue lights, using observing fields of 2 angular subtense. DIN EN ISO 11664-1:2011-07 EN ISO 11664-1:2011 (E) 6 5.2 TrThe results for the 17 observers were averaged and then slightly adjusted so that by adding together suitable proportions of the R, G, B colour-
48、matching functions ansformation procedures The experimental results were converted into those that would have been obtained if the matching had been carried out using, as reference colour stimuli, monochromatic radiations of wavelengths 700 nm for the red R, 546,1 nm for the green G and 435,8 nm for the blue B, measured in units such that equal quantities of R, G and B were requi
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