BS EN ISO 105-J03-2009 Textiles - Tests for colour fastness - Calculation of colour differences《纺织品 色牢度试验 色差计算》.pdf

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1、BS EN ISO 105-J03:2009ICS 59.080.01NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTextiles Tests forcolour fastnessPart J03: Calculation of colourdifferences (ISO 105-J03:2009)This British Standardwas published underthe authority of theStandards Policy andStrat

2、egy Committee on 30November 2009. BSI 2009ISBN 978 0 580 64277 7Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 105-J03:2009National forewordThis British Standard is the UK implementation of EN ISO 105-J03:2009. It supersedes BS EN ISO 105-J03:1997 which is withdrawn.The UK part

3、icipation in its preparation was entrusted to TechnicalCommittee TCI/81, Colour fastness and colour measurement of textiles.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a c

4、ontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 105-J03 October 2009 ICS 59.080.01 Supersedes EN ISO 105-J03:1997English Version Textiles - Tests for co

5、lour fastness - Part J03: Calculation of colour differences (ISO 105-J03:2009) Textiles - Essais de solidit des teintures - Partie J03: Calcul des carts de couleur (ISO 105-J03:2009) Textilien - Farbechtheitsprfungen - Teil J03: Berechnungen von Farbdifferenzen (ISO 105-J03:2009) This European Stand

6、ard was approved by CEN on 19 September 2009. 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 lists and bibliographical references concernin

7、g such national standards may be obtained on application to the CEN 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 the responsibility of a CEN member into its own la

8、nguage and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

9、 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 NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN Al

10、l rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 105-J03:2009: EBS EN ISO 105-J03:2009EN ISO 105-J03:2009 (E) 3 Foreword This document (EN ISO 105-J03:2009) has been prepared by Technical Committee ISO/TC 38 “Textiles“ in collaboratio

11、n with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2010, and conflicting national

12、standards shall be withdrawn at the latest by April 2010. 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 be held responsible for identifying any or all such patent rights. This document supersedes EN

13、ISO 105-J03:1997. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland

14、, 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 105-J03:2009 has been approved by CEN as a EN ISO 105-J03:2009 without any modification. B

15、S EN ISO 105-J03:2009ISO 105-J03:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Principle1 3 Procedure.2 3.1 Calculation of CIELAB values 2 3.2 Calculation of CIELAB colour differences values3 3.3 Calculation of the CMC colour difference, Ecmc(l:c)4 4 Test report5 Annex

16、 A (informative) Interpretation of results .6 Annex B (informative) Representative test data 7 Annex C (informative) Computer program for calculating colour difference .8 Bibliography10 BS EN ISO 105-J03:2009ISO 105-J03:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organizat

17、ion for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established h

18、as the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Int

19、ernational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Public

20、ation as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent ri

21、ghts. ISO 105-J03 was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 1, Tests for coloured textiles and colorants. This second edition cancels and replaces the first edition (ISO 105-J03:1995), of which it constitutes a technical revision and incorporates ISO 105-J03:1995/Cor.1

22、:1996 and ISO 105-J03:1995/Cor.2:2006. Subclause 3.1 has been replaced with the current CIE recommended form. The equations produce identical results, but the decimal numbers are replaced by fractions, so as not to limit precision. ISO 105 was previously published in thirteen “parts”, each designate

23、d by a letter (e.g. “Part A”), with publication dates between 1978 and 1985. Each part contained a series of “sections”, each designated by the respective part letter and by a two-digit serial number (e.g. “Section A01”). These sections are now being republished as separate documents, themselves des

24、ignated “parts” but retaining their earlier alphanumeric designations. A complete list of these parts is given in ISO 105-A01. BS EN ISO 105-J03:2009INTERNATIONAL STANDARD ISO 105-J03:2009(E) ISO 2009 All rights reserved 1Textiles Tests for colour fastness Part J03: Calculation of colour differences

25、 1 Scope This part of ISO 105 provides a method of calculating the colour difference between two specimens of the same material, measured under the same conditions, such that the numerical value cmc(l:c) for the total colour difference quantifies the extent to which the two specimens do not match. I

26、t permits the specification of a maximum value (tolerance) which depends only on the closeness of match required for a given end-use and not on the colour involved, nor on the nature of the colour difference. The method also provides a means for establishing the ratio of differences in lightness to

27、chroma and to hue. NOTE Annex A gives guidance on the interpretation of results. Annex B provides sample test data for use in checking computer programs. Annex C contains a sample computer program for calculating colour difference. 2 Principle The CIE1)1976 L*a*b* (CIELAB) colour space has been modi

28、fied to enhance its visual uniformity when calculating the colour difference between two specimens. The modifications to CIELAB by the CMC equation provide a numerical value, cmc, which describes the colour difference between a sample and a reference in a more nearly uniform colour space. This permi

29、ts the use of a single-number tolerance (“acceptability tolerance” or “pass/fail tolerance”) for judging the acceptability of a colour match in which the tolerance is independent of the colour of the reference. The ellipsoid semi-axes (lSL, cScand SH) used to derive cmcprovide a means to interpret t

30、he three separate components of colour difference (lightness, chroma and hue) in manners suitable for a wide range of uses. The equation for cmcdescribes an ellipsoidal boundary (with axes in the directions of lightness, chroma and hue) centred about a reference. The agreed-upon cmcacceptability tol

31、erance describes a volume within which all specimens are acceptable matches to the reference. The colour difference is composed of three components that comprise the differences between the reference and the specimen. These are as follows. a) A lightness component that is weighted by a lightness tol

32、erance (L*/lSL). This is represented as Lcmc. If the Lcmcis positive, the specimen is lighter than the reference. If the Lcmcis negative, the specimen is darker than the reference; b) A chroma component that is weighted by the chroma tolerance (C*ab/cSc). This is represented as Ccmc. If the Ccmcis p

33、ositive, the specimen is more chromatic than the reference. If the Ccmcis negative, the specimen is less chromatic than the reference; 1) Commission Internationale de lclairage, Central Bureau, Kegelgasse 27, A-1030 Vienna, Austria. BS EN ISO 105-J03:2009ISO 105-J03:2009(E) 2 ISO 2009 All rights res

34、ervedc) A hue component that is weighted by the hue tolerance (H*ab/SH). This is represented as Hcmc. If the Hcmc is positive, the hue difference of the specimen is anti-clockwise from the reference in the CIELAB a*, b* diagram. If the Hcmcis negative, the hue difference of the specimen is clockwise

35、 from the reference in the CIELAB a*, b* diagram. 3 Procedure 3.1 Calculation of CIELAB values Calculate the CIELAB L*, a*, b*, C*ab, habvalues from the X, Y, Z tristimulus values for both the reference and specimen as follows: ()*116 16yLfQ=() ()* 500x yafQfQ=()()* 200yzbfQfQ=where () () ()/; /; /x

36、 ny nz nQXXQYYQZZ= and ()1/ 3 3() if (6/29)ii ifQ Q Q= else ()3(841/108) 4/29 if (6/29)iifQ Q Q=+u where i varies as X, Y, and Z ()1/222ab*Cab=+ ()abarctan * / *hba= expressed on a 0 to 360 scale with the a* positive axis being 0 and the b* positive axis at 90. For these equations, Xn, Ynand Znare t

37、he tristimulus values of the illuminant/observer combination in which it is desired to calculate CMC(l:c) colour differences. The preferred illuminant/observer combination is D65/10. Table 1 gives the values for this and five other combinations. BS EN ISO 105-J03:2009ISO 105-J03:2009(E) ISO 2009 All

38、 rights reserved 3Table 1 Tristimulus values for six illuminant/observer combinations Tristimulus values Illuminant/observer combinations XnYnZnD65/10 94,811 100,00 107,304 D65/2 95,047 100,00 108,883 C/10 97,285 100,00 116,145 C/2 98,074 100,00 118,232 A/10 111,144 100,00 35,200 A/2 109,850 100,00

39、35,585 3.2 Calculation of CIELAB colour differences values Calculate the CIELAB colour differences L*, a*, b*, C*ab, E*ab, H*ab, using the following equations, in which the subscripts R and S refer respectively to the reference and specimen CIELAB values: SR* *;L LL= SR* *;aa a= SR* *;bb b= ab ab,S

40、ab,R* *;CC C= ()()()1/2222ab*;ELab=+()()()1/2222ab ab ab*HpqE L C= where 1if 0pm= W or 1if 0pm= where ab,S ab,Rmh h= in which . indicates that the positive value is to be used regardless of the sign of the expression between the two lines. BS EN ISO 105-J03:2009ISO 105-J03:2009(E) 4 ISO 2009 All rig

41、hts reservedor the equivalent ()1/2ab ab,S ab,R S R S R*2* *HtCC aabb= where t = 1 if a*S b*R u a*R b*Sor 1t = SR RSif * * * *ab ab 3.3 Calculation of the CMC colour difference, Ecmc(l:c) 3.3.1 The CMC colour difference is obtained from the following equation: ()( )()()1/2222cmc L ab c ab H:*/ */ */

42、Elc LlS CcS H S=+ +Calculate the ellipsoid semi-axes from the L*R, C *ab,Rand the hab,Rof the reference as follows: ()LR RR0,040 975 * / 1 0,017 65 * if * 16SL LL=+ W or LR0,511 if * 16;SL=345 THEN 350 ELSE GOTO 360 350 T=.36+ABS(.4*COS(H1+35)/57.3):GOTO 370 360 T=.56+ABS(.2*COS(H1+168)/57.3) 370 SL

43、=.040975*L1/(1+.01765*L1):IF L1180 THEN Y1=-1 ELSE Y1=1 386 Y2=Y1*DA:IF Y2=0 THEN DH=-DH 390 DE=SQR(DL*DL+DC*DC+DH*DH) 400 RETURN BS EN ISO 105-J03:2009ISO 105-J03:2009(E) 10 ISO 2009 All rights reservedBibliography 1 CIE Publication 15:2004, Colorimetry, 3rd Edition BS EN ISO 105-J03:2009BS EN ISO

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