1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 11664-3:2012ColorimetryPart 3: CIE tristimulus valuesBS EN ISO 11664-3:2013Copyright European Committee for Standardization Provided by IHS under license with CENNot for R
2、esaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 11664-3:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 11664-3:2013. It is identical to ISO 11664-3:2012. It supersedes BS ISO 11664-3:2012, which is withdrawn.The UK p
3、articipation in its preparation was entrusted to Technical Committee STI/14, Colour measurement and schedules.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Use
4、rs are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 80560 8ICS 17.180.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority o
5、f the Standards Policy and Strategy Committee on 30 June 2012.Amendments/corrigenda issued since publicationDate Text affected30 June 2013 This corrigendum renumbers BS ISO 11664-3:2012 as BS EN ISO 11664-3:2013Copyright European Committee for Standardization Provided by IHS under license with CENNo
6、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11664-3 May 2013 ICS 17.180.20 English Version Colorimetry - Part 3: CIE tristimulus values (ISO 11664-3:2012) Colorimtrie - Partie 3: Composantes trichromatiques
7、 CIE (ISO 11664-3:2012) Farbmetrik - Teil 3: CIE-Farbwerte (ISO 11664-3:2012) This European Standard was approved by CEN on 16 May 2013. 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
8、 standard without any alteration. Up-to-date lists 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
9、 in any other language made by translation under 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, Czec
10、h Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EU
11、ROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11664-3:2013: ECopyrig
12、ht European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN ISO 11664-3:2013 (E) 3 Foreword The text of ISO 11664-3:2012 has been prepared by “CIE International Commission on Illumination” of th
13、e International Organization for Standardization (ISO) and has been taken over as EN ISO 11664-3:2013 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 publication of an
14、 identical text or by endorsement, at the latest by November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. 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 shall not
15、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, Denmark, E
16、stonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice T
17、he text of ISO 11664-3:2012 has been approved by CEN as EN ISO 11664-3:2013 without any modification. iiBS EN ISO 11664-3:2013EN ISO 11664-3:2012(E)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without lic
18、ense from IHS-,-,-BS ISO 11664-3:2012ISO 11664-3:201(E) CIE S 014-3/E:2011 viii CIE 2011 All rights reserved ISO 201 All rights reservedCONTENTS Foreword Introduction 1 1 Scope 1 2 Normative References 1 3 Definitions, Symbols and Abbreviations 1 4 Standard Method 3 4.1 Calculation of Tristimulus Va
19、lues . 3 4.2 Normalizing Constant for Self-Luminous Light Sources 4 4.3 Normalizing Constant for Reflecting or Transmitting Objects 4 4.4 CIE 1964 Standard Colorimetric System 4 5 Abridged Methods 5 5.1 Abridged Method for 5 nm Data . 5 5.2 Abridged Method for 10 nm or 20 nm Data for Reflecting or T
20、ransmitting Objects . 5 5.3 Abridged Method for 10 nm or 20 nm Data for Self-Luminous Light Sources . 6 6 Supplementary Treatment of Input Data 6 6.1 Extrapolation . 6 6.2 Interpolation 7 6.3 Bandwidth . 7 7 Chromaticity Coordinates . 7 8 Numerical Procedures 8 9 Presentation of Results 8 Bibliograp
21、hy . 9 viiBS ISO 11664-3:2012ISO 11664-3:201(E) CIE S 014-3/E:2011 viii CIE 2011 All rights reserved ISO 201 All rights reservedCONTENTS Foreword Introduction 1 1 Scope 1 2 Normative References 1 3 Definitions, Symbols and Abbreviations 1 4 Standard Method 3 4.1 Calculation of Tristimulus Values . 3
22、 4.2 Normalizing Constant for Self-Luminous Light Sources 4 4.3 Normalizing Constant for Reflecting or Transmitting Objects 4 4.4 CIE 1964 Standard Colorimetric System 4 5 Abridged Methods 5 5.1 Abridged Method for 5 nm Data . 5 5.2 Abridged Method for 10 nm or 20 nm Data for Reflecting or Transmitt
23、ing Objects . 5 5.3 Abridged Method for 10 nm or 20 nm Data for Self-Luminous Light Sources . 6 6 Supplementary Treatment of Input Data 6 6.1 Extrapolation . 6 6.2 Interpolation 7 6.3 Bandwidth . 7 7 Chromaticity Coordinates . 7 8 Numerical Procedures 8 9 Presentation of Results 8 Bibliography . 9 v
24、iiBS EN ISO 11664-3:2013ISO 11664-3:2012(E)iii CIE 2011 All rights reserved ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 11664-3:2013ISO
25、11664-3:2012(E)iv CIE 2011 All rights reserved ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11664-3:2012ISO 11664-3:201(E) CIE S 014-3/E:201
26、1 CIE 2011 All rights reserved ISO 201 All rights reserved 1Colorimetry - Part 3: CIE Tristimulus Values Introduction Colour stimuli with different spectral distributions can look alike. An important function of colorimetry is to determine which stimuli look alike to a given observer with a given se
27、t of colour-matching functions. This is done by calculating a set of three tristimulus values for each stimulus. Equality of tristimulus values indicates equality of colour appearance under equal irradiation and viewing conditions. This Standard is based on long-standing CIE recommendations (CIE, 20
28、04) for the calculation of tristimulus values. 1 Scope This CIE Standard specifies methods of calculating the tristimulus values of colour stimuli for which the spectral distributions are provided. These colour stimuli may be produced by self-luminous light sources or by reflecting or transmitting o
29、bjects. The Standard requires that the colour stimulus function be tabulated at measurement intervals of 5 nm or less in a wavelength range of at least 380 nm to 780 nm. Extrapolation methods are suggested for cases where the measured wavelength range is less than 380 nm to 780 nm. The standard meth
30、od is defined as summation at 1 nm intervals over the wavelength range from 360 nm to 830 nm. Alternative abridged methods are defined for larger intervals (up to 5 nm) and shorter ranges (down to 380 nm to 780 nm). The alternative methods are to be used only when appropriate and when the user has r
31、eviewed the impact on the final results. The Standard may be used in conjunction with the CIE 1931 standard colorimetric observer or the CIE 1964 standard colorimetric observer. 2 Normative References The following referenced documents are indispensable for the application of this document. For date
32、d references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. CIE DS 017.2/E:2009. ILV: International Lighting Vocabulary. ISO 11664-1:2007(E)/CIE S 014-1/E:2006. Joint ISO/CIE Standard: Colorimetry Part 1. CIE
33、 Standard Colorimetric Observers. ISO 11664-2:2007(E)/CIE S 014-2/E:2006. Joint ISO/CIE Standard: Colorimetry Part 2. CIE Standard Illuminants. ISO 23539:2005(E)/CIE S 010/E:2004. Joint ISO/CIE Standard: Photometry - The CIE System of Physical Photometry. 3 Definitions, Symbols and Abbreviations For
34、 the purposes of this International Standard, the terms and definitions given in CIE DS 017.2/E:2009 (International Lighting Vocabulary), and the following symbols and abbreviations apply. k, k10normalizing constants Kmmaximum spectral luminous efficacy of radiation in the CIE standard system of phy
35、sical photometry BS EN ISO 11664-3:2013ISO 11664-3:2012(E)1 CIE 2011 All rights reserved ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11664-
36、3:2012ISO 11664-3:201(E) CIE S 014-3/E:2011 2 CIE 2011 All rights reserved ISO 201 All rights reservedKm,10maximum spectral luminous efficacy of radiation when the V10() function is used for photometry R() spectral reflectance factor S() relative spectral distribution of an illuminant V() spectral l
37、uminous efficiency function in the CIE standard system of physical photometry V10() spectral luminous efficiency function when the )(10y function is used for photometry Wx(), Wy(), Wz() pre-calculated weighting functions for tristimulus integration using the CIE 1931 standard colorimetric observer W
38、x,10(), Wy,10(), Wz,10() pre-calculated weighting functions for tristimulus integration using the CIE 1964 standard colorimetric observer x, y, z chromaticity coordinates calculated using the CIE 1931 standard colorimetric observer x10, y10, z10chromaticity coordinates calculated using the CIE 1964
39、standard colorimetric observer (), (), ()xyz colour-matching functions of the CIE 1931 standard colorimetric observer (also known as the CIE 2 standard colorimetric observer) 10 10 10(), (), ()xyz colour-matching functions of the CIE 1964 standard colorimetric observer (also known as the CIE 10 stan
40、dard colorimetric observer) X, Y, Z tristimulus values calculated using the CIE 1931 standard colorimetric observer X10, Y10, Z10tristimulus values calculated using the CIE 1964 standard colorimetric observer () spectral radiance factor wavelength interval () colour stimulus function (description of
41、 a colour stimulus by the spectral concentration of a radiometric quantity, such as radiance or radiant power, as a function of wavelength) () relative colour stimulus function (relative spectral distribution of the colour stimulus function) wavelength () spectral reflectance () spectral transmittan
42、ce BS EN ISO 11664-3:2013ISO 11664-3:2012(E) CIE 2011 All rights reserved ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO 11664-3:2012ISO 11664
43、-3:201(E) CIE S 014-3/E:2011 CIE 2011 All rights reserved ISO 201 All rights reserved 34 Standard Method The Standard may be used in conjunction with the CIE 1931 standard colorimetric observer or the CIE 1964 standard colorimetric observer. If the angle subtended at the eye by the colour stimulus (
44、or fields to be matched in colour) is between about 1 and 4 the CIE 1931 standard colorimetric observer shall be used. If this angular subtense is greater than 4 the CIE 1964 standard colorimetric observer shall be used. The same colorimetric observer shall be used for all stimuli to be compared wit
45、h each other. 4.1 Calculation of Tristimulus Values In the CIE 1931 standard colorimetric system, tristimulus values X, Y and Z are defined as integrals over the spectral range 360 nm to 830 nm according to the equations: Xk xYk yZk z ddd()()() ()()()(1) where () is the colour stimulus function to b
46、e evaluated; xyz(),(), () are the colour-matching functions of the CIE 1931 standard colorimetric observer; and k is a normalizing constant defined below. The standard method for evaluating these integrals is numerical summation from 360 nm to 830 nm at wavelength intervals, , equal to 1 nm accordin
47、g to the equations: Xk xYk yZk z ()()() ()()()(2) using colour-matching functions (),(),()xyzdefined with 7 significant figures in ISO 11664-1:2007(E)/CIE S 014-1/E:2006 and a colour stimulus function, (), measured using a symmetrical triangular or trapezoidal bandpass with a halfwidth equal to 1 nm
48、. Tristimulus values are often evaluated on a relative basis. In such cases the relative colour stimulus function, (), may be used instead of the colour stimulus function, (). It is essential that, for stimuli that will be considered together, all the spectral distributions involved be assessed on the same relative basis. The tristimulus values obtained are then relative in the sense that all the values involved may be multiplied by the same single ar
