CIE均匀颜色空间与色差公式的应用-刘浩学

113Vol11No3JournalofBeijingInstituteofGraphicCommunication20039Sep2003:20030508:10048626(2003)03000306CIE刘浩学(,102600):鉴于CIE均匀颜色空间及色差公式日益广泛用于彩色印刷复制过程控制和印刷品质量评价,论述了CIE均匀颜色空间对颜色的表示计算方法,并讨论了计算和应用中出现的问题,还着重介绍了CMC色差公式和最新的CIEDE2000色差公式,以利于在印刷业中正确地应用:色度学;均匀颜色空间;色差;印刷复制:O432.3;TS801.3:A0,,CIE,,CIE,,,GB/T17934.21999CY/T31999CY/T311999,CIE,,CIE;,,,,,,,,,CIE1976L*a*b*,,CIE1976L*a*b*,,,,,1CIE1976L*a*b*CIE1976L*a*b*CIE1931,XYZ,XYZL*a*b*,a*b*,1:1CIE1976L*a*b*L*=116(YYn)1/3-16,YYn0.008856;(1)a*=500[(XXn)1/3-(YYn)1/3];b*=200[(YYn)1/3-(ZZn)1/3],XXn,YYn,ZZn0.008856(2),XYZCIE1931,XnYnZn,D65D50D65D50XnYnZn,1,1D65D502XnYnZnxnynD6595.04100.00108.890.31270.329D5096.4210082.490.34570.3600X/XnY/YnZ/Zn0.008856,,,,,:L*=116f(YYn)-16;(3)a*=500[f(XXn)-f(YYn)];b*=200[f(YYn)-f(ZZn)](4),f(XXn)=(XXn)1/3,XXn0.008856;7.787(XXn)+16116,XXn0.008856(5)f(YYn)=(YYn)1/3,YYn0.008856;7.787(YYn)+16116,YYn0.008856(6)f(ZZn)=(ZZn)1/3,ZZn0.008856;7.787(ZZn)+16116,ZZn0.008856(7)(5)~(7),0.008856,,f(X/Xn)f(Y/Yn)f(Z/Zn)0.0088562X/XnY/YnZ/Zn0.008856,f(X/Xn)f(Y/Yn)f(Z/Zn)0.2069X/XnY/YnZ/Zn0,f(X/Xn)f(Y/Yn)f(Z/Zn)0,0.13792f(X/Xn)(f(Y/Yn)f(Z/Zn))(2)~(7),:(1)L*a*b*XnYnZn,42003XYZ,D65,L*a*b*D65XnYnZn(2)X/XnY/YnZ/Zn0.008856,(3)(4):L*=903.3Y/Yn;(8)a*=3893.5(X/Xn-Y/Yn);b*=1557.4(Y/Yn-Z/Zn)(9)(3)X/XnY/YnZ/Zn0.008856,(5)~(7),,(1)(2)(4),D65D50,22,1,2D65D50XYZD650.841670.88560.96433D500.85390.88560.73053,33,,,,3XYZ1.231.291.36CMY2.171.882.17CMYK1.041.081.392CIE1976L*a*b*CIE1976L*a*b*,1,L*,,L*=0;,L*=100a*b*,a*(),a*;b*,b*4,:(1),(2)412,(3),,,,,a*b*a*b*0,0,,,,,,a*b*,1,CIE1976L*a*b*p,,a*b*a*b*,H*a*b*a*h*ab;()C*,:h*ab=arctanb*a*()h*ab=180arctanb*a*,(10)C*=(a*)2+(b*)2(11)a*b*,0~360:a*0,b*0,0h*ab90;a*0,b*0,90h*ab180;a*0,b*0,180h*ab270;53:CIEa*0,b*0,270h*ab3601,a*b*,0~90,a*b*0,;90~180,a*0,b*0,;180~270,a*b*0,;270~360,a*0,b*0,3CIE1976L*a*b*,2,E*ab=(L*1-L*2)2+(a*1-a*2)2+(b*1-b*2)2(12),L*1,a*1,b*1L*2,a*2,b*22,,L*,a*,b*(L*1-L*2),(a*1-a*2)(b*1-b*2),,3L*ab=L*1-L*2,(13)(11)C*ab=(a*1)2+(b*1)2-(a*2)2+(b*2)2,(14):h*ab=(E*ab)2+(L*ab)2-(C*ab)2(15)h*ab2(h*ab1-h*ab2),h*ab;,h*ab,:E*ab=(L*)2+(h*ab)2-(C*ab)2,(16)(a*1-a*2)2+(b*1-b*2)2=(h*ab)2+(C*ab)2(17),(12),(13)~(15)(11)(14)2a*b*,2,4CMC(lc)CMCCMCCIE,,CIEDE2000CIE1976L*a*b*,CMC,,;,,,,33CMCCMC:Ecmc=(L*/lS*L)2+(C*ab/cSc)2+(H*ab/SH)2(18)(18),L*C*abH*ab(13)~(15)CIE1976L*a*b*,SLSCSH,(19)~(21):SL=0.040975L*/(1+0.01765L*),L*16;SL=0.511,L*16(19)SC=0.0638C*ab/(1+0.0131C*ab)+0.638(20)62003SH=SC(FT+1-F)(21)(21):F=(C*ab)/[(C*ab)+1900],(22)T=0.36+|0.4cos(h*ab+35)|,164h*ab345;T=0.56+|0.2cos(h*ab+168)|,(23)(18)lc,c=1,l=2,l=1.4,,lc,lc,E*cmc(lc),l=2c=1,E*cmc(21)5CIEDE2000CIE1976L*a*b*,CIELABCIE94,,2001,CIE2000(L,C,H),CIEDE2000CIE142-2001,,,CIEISOCIEDE2000:V=kE-1E00,(24)E00=LkLSL2+CkCSC2+HkHSH2+RTCkCSCHkHSH0.5(25)(24),V,E00CIEDE2000,kE-1,,E00(25)LCH,:L=Lb-Ls(26)C=Cb-Cs(27)H=2(CbCs)0.5sin(h/2)(28)(26)~(28)bsh=hb-hs,;L=L*(CIE1976);a=a*(1+G),b=b*(CIE1976);C=a2+b2,h=180arctan(b/a),G,:G=0.51-C*ab7C*ab7+257(29)(29),C*abCIE1976L*a*b*SLSCSH,:SL=1+0.015(L-50)220+(L-50)2,(30)SC=1+0.045C,(31)SH=1+0.015CT,(32)T=1-0.17cos(h-30)+0.24cos(2h)+0.32cos(3h+6)-0.20cos(4h-63)(33)(30)~(33),LChCIEDE2000(25)RT,:RT=-sin(2)RC(34)(34),,RC,:=30exp-h-275252,(35)RC=2C7C7+257(36)(25)kLkCkH,CIE,4,kL=kC=kH=1,73:CIE4CIED651000lx(L*=50)4,0~5CIELAB,,kL=2,kC=kH=1,2,CIE,,6510,E*abEcmc(21)E00(111)CIE,CIE1964,D65,Xn=94.811,Yn=100.000,Zn=107.30491,X=0.704,Y=0.75,Z=0.972X/Xn=0.0074250.008856,Y/Yn=0.00750.008856,Z/Zn=0.0090580.008856,b*:b*=200[7.7870.0075+16116-(0.009058)1/3]=-2.42421025,E*abEcmc(21)E00(111),,,510XYZE*abEcmc(21)E00(111)119.4128.4111.5819.5528.6410.583.191.531.26222.4831.6038.4822.5831.3736.792.201.401.26329.0029.5835.7528.7729.7435.601.561.701.8744.148.548.034.418.518.654.582.051.8654.963.7219.594.673.8117.786.542.832.04615.609.255.0215.919.154.393.681.581.41773.0078.0581.8073.9478.8284.521.511.921.44874.0078.3285.3168.1873.4079.712.321.741.5490.7040.750.9720.6140.650.8510.950.430.64100.220.230.3250.0930.10.1451.320.910.91(下转第12页)82003TheMainParameterEffectingUVCuringCoatingsDrynessPropertiestheLowestEffectiveCuringEnergyJIAJingru,YANGLizhen(BeijingInstituteGraphicCommunication,Beijing102600,China)Abstract:ThecuringcharacteristicparametersofthelowesteffectivecuringenergywerefoundbymeansofUVcoatingdrynessexperiments.Theresultsshowedthatthedrynesspropertieswerebetterwhentheproductofpoweroflampregionandthetimeofthesamplespassingtheregionisgreaterthanorequaltotheparameters,onwhichtheotherconditionsshowedthedrynesspropertiesweak.TheexperimentalresultsindicatedthatthetechniqueparametersofvarioustypesofUVcuringmachineswereabletobeadjustedusingthelowesteffectivecuringenergy,andimprovedthecuringefficiencyofUVcoatings.Keywords:Ultravioletlight,UVcuringcoatings,thelowesteffectivecuringenergy,dryness(下转第8页):[1]ImprovementtoIndustrialColour-DifferenceEvaluation[R].Vienna:CentralBureauoftheCIE,2001.[2]LuoMR,CuiG,RiggB.TheDevelopmentoftheCIE2000Colour-DifferenceFormula:CIEDE2000[J].ColorRes.Appl.,2001,26(5):340~350.[3]ISO13655-1996,GraphicTechnology-SpectralMeasurementandColorimetricComput