»°Λή½I—Ή‚Μ‚¨’m‚η‚Ή
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₯l‹C‹LŽ–Χέ·έΈή
ψκ2.LAB Delta E
2.3.CIEDE2000 (delta E00)
CIE 1994‚Μ’θ‹`‚Ν€’mŠo“I‹Οˆκ«‚π\•ͺ‚ΙŠm•Ϋ‚Ε‚«‚Δ‚’‚Θ‚©‚Α‚½‚½‚ί€CIE‚Ν’θ‹`‚πŒ©’Ό‚΅€5‰ΣŠ‚Μ’ω³‚π’Η‰Α‚΅‚½:[13][14]

ΒF—Μˆζ (F‘ŠŠp“x275‹•t‹ί) ‚Ι‚¨‚―‚ι–β‘θ‚ɑΏˆ‚·‚ι‚½‚߂̐F‘Š‰ρ“]€ (RT) :[15]
’†—§F‚̕␳€(L*C*h*‚Μˆα‚’‚Ι‚¨‚―‚ιΕ‘ε’l)
–Ύ“x•β³€ (SL)
Κ“x•β³€ (SC)
F‘Š•β³€ (SH)
Δ E 00 = ( Δ L k L S L ) 2 + ( Δ C k C S C ) 2 + ( Δ H k H S H ) 2 + R T Δ C k C S C Δ H k H S H {\displaystyle \Delta E_{00}^{*}={\sqrt {\left({\frac {\Delta L'}{k_{L}S_{L}}}\right)^{2}+\left({\frac {\Delta C'}{k_{C}S_{C}}}\right)^{2}+\left({\frac {\Delta H'}{k_{H}S_{H}}}\right)^{2}+R_{T}{\frac {\Delta C'}{k_{C}S_{C}}}{\frac {\Delta H'}{k_{H}S_{H}}}}}} kL€ k‚¨‚ζ‚Ρ kH ‚Ν€’ʏ퓯ˆκ’l‘ Δ L = L 2 L 1 {\displaystyle \Delta L^{\prime }=L_{2}^{*}-L_{1}^{*}} L ¯ = L 1 + L 2 2 C ¯ = C 1 + C 2 2 {\displaystyle {\bar {L}}={\frac {L_{1}^{*}+L_{2}^{*}}{2}}\quad {\bar {C}}={\frac {C_{1}^{*}+C_{2}^{*}}{2}}} a 1 = a 1 + a 1 2 ( 1 C ¯ 7 C ¯ 7 + 25 7 ) a 2 = a 2 + a 2 2 ( 1 C ¯ 7 C ¯ 7 + 25 7 ) {\displaystyle a_{1}^{\prime }=a_{1}^{*}+{\frac {a_{1}^{*}}{2}}\left(1-{\sqrt {\frac {{\bar {C}}^{7}}{{\bar {C}}^{7}+25^{7}}}}\right)\quad a_{2}^{\prime }=a_{2}^{*}+{\frac {a_{2}^{*}}{2}}\left(1-{\sqrt {\frac {{\bar {C}}^{7}}{{\bar {C}}^{7}+25^{7}}}}\right)} C ¯ = C 1 + C 2 2  and  Δ C = C 2 C 1 where  C 1 = a 1 2 + b 1 2 C 2 = a 2 2 + b 2 2 {\displaystyle {\bar {C}}^{\prime }={\frac {C_{1}^{\prime }+C_{2}^{\prime }}{2}}{\mbox{ and }}\Delta {C'}=C'_{2}-C'_{1}\quad {\mbox{where }}C_{1}^{\prime }={\sqrt {a_{1}^{'^{2}}+b_{1}^{*^{2}}}}\quad C_{2}^{\prime }={\sqrt {a_{2}^{'^{2}}+b_{2}^{*^{2}}}}\quad } h 1 = atan2 ( b 1 , a 1 ) mod 360 , h 2 = atan2 ( b 2 , a 2 ) mod 360 {\displaystyle h_{1}^{\prime }={\text{atan2}}(b_{1}^{*},a_{1}^{\prime })\mod 360^{\circ },\quad h_{2}^{\prime }={\text{atan2}}(b_{2}^{*},a_{2}^{\prime })\mod 360^{\circ }} Δ h = { h 2 h 1 | h 1 h 2 | 180 h 2 h 1 + 360 | h 1 h 2 | > 180 , h 2 h 1 h 2 h 1 360 | h 1 h 2 | > 180 , h 2 > h 1 {\displaystyle \Delta h'={\begin{cases}h_{2}^{\prime }-h_{1}^{\prime }&\left|h_{1}^{\prime }-h_{2}^{\prime }\right|\leq 180^{\circ }\\h_{2}^{\prime }-h_{1}^{\prime }+360^{\circ }&\left|h_{1}^{\prime }-h_{2}^{\prime }\right|>180^{\circ },h_{2}^{\prime }\leq h_{1}^{\prime }\\h_{2}^{\prime }-h_{1}^{\prime }-360^{\circ }&\left|h_{1}^{\prime }-h_{2}^{\prime }\right|>180^{\circ },h_{2}^{\prime }>h_{1}^{\prime }\end{cases}}} Δ H = 2 C 1 C 2 sin ( Δ h / 2 ) , H ¯ = { ( h 1 + h 2 ) / 2 | h 1 h 2 | 180 ( h 1 + h 2 + 360 ) / 2 | h 1 h 2 | > 180 , h 1 + h 2 < 360 ( h 1 + h 2 360 ) / 2 | h 1 h 2 | > 180 , h 1 + h 2 360 {\displaystyle \Delta H^{\prime }=2{\sqrt {C_{1}^{\prime }C_{2}^{\prime }}}\sin(\Delta h^{\prime }/2),\quad {\bar {H}}^{\prime }={\begin{cases}(h_{1}^{\prime }+h_{2}^{\prime })/2&\left|h_{1}^{\prime }-h_{2}^{\prime }\right|\leq 180^{\circ }\\(h_{1}^{\prime }+h_{2}^{\prime }+360^{\circ })/2&\left|h_{1}^{\prime }-h_{2}^{\prime }\right|>180^{\circ },h_{1}^{\prime }+h_{2}^{\prime }<360^{\circ }\\(h_{1}^{\prime }+h_{2}^{\prime }-360^{\circ })/2&\left|h_{1}^{\prime }-h_{2}^{\prime }\right|>180^{\circ },h_{1}^{\prime }+h_{2}^{\prime }\geq 360^{\circ }\end{cases}}} T = 1 0.17 cos ( H ¯ 30 ) + 0.24 cos ( 2 H ¯ ) + 0.32 cos ( 3 H ¯ + 6 ) 0.20 cos ( 4 H ¯ 63 ) {\displaystyle T=1-0.17\cos({\bar {H}}^{\prime }-30^{\circ })+0.24\cos(2{\bar {H}}^{\prime })+0.32\cos(3{\bar {H}}^{\prime }+6^{\circ })-0.20\cos(4{\bar {H}}^{\prime }-63^{\circ })} S L = 1 + 0.015 ( L ¯ 50 ) 2 20 + ( L ¯ 50 ) 2 S C = 1 + 0.045 C ¯ S H = 1 + 0.015 C ¯ T {\displaystyle S_{L}=1+{\frac {0.015\left({\bar {L}}-50\right)^{2}}{\sqrt {20+{\left({\bar {L}}-50\right)}^{2}}}}\quad S_{C}=1+0.045{\bar {C}}^{\prime }\quad S_{H}=1+0.015{\bar {C}}^{\prime }T} R T = 2 C ¯ 7 C ¯ 7 + 25 7 sin [ 60 exp ( [ H ¯ 275 25 ] 2 ) ] {\displaystyle R_{T}=-2{\sqrt {\frac {{\bar {C}}'^{7}}{{\bar {C}}'^{7}+25^{7}}}}\sin \left[60^{\circ }\cdot \exp \left(-\left[{\frac {{\bar {H}}'-275^{\circ }}{25^{\circ }}}\right]^{2}\right)\right]}
[4]‘OΝί°Όή
(2.2.CIE94 (delta E94))
[6]ŽŸΝί°Όή
(2.4.‹–—e’l)
ω~–ΪŽŸ‚Ι–ί‚ι
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2019/05/05 12:32
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2020/02/25 XV
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(C)NTT Resonant