Performance of CIE Color Matching Functions Tested by Metamerism Reflected Samples

Phase	Light source	Color center	Color sample size /(cm×cm)	Number of observers		Age range of observers		Total observations	Ref. No
Phase	Light source	Color center	Color sample size /(cm×cm)	Young	Old	Young	Old	Total observations	Ref. No
EXP.Ⅰ	Fluorescent	5	5×4	30	26	19--25	60--74	20160	[13]
EXP.Ⅱ	LED	3	3×6	26	14	20--25	62--75	18000	[14]

Table 2. Colorimetric values of target colors with different lightness
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Table 2. Colorimetric values of target colors with different lightness
Target color NL1 NL2 NL3 NL4 NL5
$L_{10}^{*}$ 34.36 45.38 54.48 62.65 71.61
$a_{10}^{*}$ -2.42 -1.82 -2.19 0.15 0.04
$b_{10}^{*}$ -2.82 1.14 -3.27 -0.58 5.72
$C_{ab}^{*}$ 3.72 2.15 3.94 0.60 5.72

Table 3. Detailed information of EXP.Ⅲ
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Table 3. Detailed information of EXP.Ⅲ
Light source Target color Sample number CIELAB Δ ${\bar{E}}_{ab}^{*}$ Number of observers Total observations
Fluorescence 5 80 0.54--5.15 2.53 26 52

Table 4. Consistency between color difference calculated by CIE CMFs and visual color difference of observer in terms of STRESS value

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Table 4. Consistency between color difference calculated by CIE CMFs and visual color difference of observer in terms of STRESS value

Experiment	Group	CIE1931	CIE1964	CIE2006 (22)			CIE2006 (68)
Experiment	Group	CIE1931	CIE1964	2°	4°	10°	2°	4°	10°
EXP.Ⅰ	Young	63.6	37.0	46.3		32.0		42.9		68.0	65.0	56.9
EXP.Ⅰ	Old	31.4	62.6	33.6		54.1		67.7		44.3	33.8	34.3
EXP.Ⅱ	Young	61.5	19.6	45.3		12.8		23.5		59.0	63.1	51.2
EXP.Ⅱ	Old	14.7	66.4	27.6		61.2		67.3		16.7	17.7	20.0
EXP.Ⅲ	Young	30.5	29.8	26.4		28.1		30.5		32.5	30.2	27.8

Table 5. Local and global uniformity of ellipses calculated by CIE recommended CMFs
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Table 5. Local and global uniformity of ellipses calculated by CIE recommended CMFs
EXP.Ⅲ CIE1931 CIE1964 CIE2006 (22) CIE2006 (68)
2° 4° 10° 2° 4° 10°
σ_RMSE 1.19 0.94 0.91 0.75 0.82 1.08 1.20 1.06
${σ_{CV}}_{}$ /% 22.7 20.7 16.2 16.9 22.9 20.4 22.0 19.4

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Yu Li, Min Huang, Yu Wang, Chunjie Shi, Xiu Li, Yu Liu. Performance of CIE Color Matching Functions Tested by Metamerism Reflected Samples[J]. Acta Optica Sinica, 2022, 42(5): 0533001

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