Influence of LED Primary Colors on Color Matching Accuracy

Chunli Guo; Min Huang; Yonghui Xi; Jie Pan

doi:10.3788/AOS202040.1633001

Journals >Acta Optica Sinica >Volume 40 >Issue 16 >Page 1633001 > Article

Acta Optica Sinica
Vol. 40, Issue 16, 1633001 (2020)

Influence of LED Primary Colors on Color Matching Accuracy

Chunli Guo, Min Huang^*, Yonghui Xi, and Jie Pan

Author Affiliations

School of Printing and Packaging Engineering, Beijing Institute of Graphic Communication, Beijing 102600, China

show less

DOI: 10.3788/AOS202040.1633001 Cite this Article Set citation alerts

Chunli Guo, Min Huang, Yonghui Xi, Jie Pan. Influence of LED Primary Colors on Color Matching Accuracy[J]. Acta Optica Sinica, 2020, 40(16): 1633001 Copy Citation Text

show less

Fig. 1. Normalized spectral power distributions of the primary colors of the target and matched devices. (a) R channel; (b) G channel; (c) B channel

Download full size

Fig. 2. Color gamuts of the target and matched devices

Download full size

Fig. 3. Experimental related diagram. (a) Experimental setup; (b) LED-Panel and the controllers; (c) interface of software adjustment

Download full size

Fig. 4. Comparisons of the matched colors with different CMFs in different RGB combinations. (a) L1; (b) L2; (c) L3; (d) L4

Download full size

Fig. 5. Histograms of the Δ(u', v') values calculated by different color matching functions

Download full size

Fig. 6. Observer variability ellipses from different LED-RGB primary color combinations. (a) 5 colors; (b) white

Download full size

Fig. 7. Results from Ref. [15] with different primary-sets by CIE1964

Download full size

Device	Primary	λ-measured /nm	FWHM /nm	x₁₀	y₁₀	u'₁₀	v'₁₀
Target device	NEC-R	652	90	0.64	0.33	0.45	0.52
	NEC-G	520	32	0.26	0.68	0.10	0.58
	NEC-B	444	21	0.15	0.10	0.16	0.23
Matched device	LED-R1	636	18	0.69	0.31	0.52	0.52
	LED-R2	672	20	0.71	0.29	0.57	0.51
	LED-G1	508	27	0.12	0.70	0.04	0.56
	LED-G2	524	31	0.24	0.72	0.08	0.58
	LED-B1	452	19	0.15	0.07	0.16	0.18
	LED-B2	472	22	0.11	0.18	0.09	0.33

Table 1. Primary colors and colorimetric information of the target and matched devices

Colors	CIE recommended value			Measured value					Δ ${E_{ab}}^{*}$
Colors	$L_{10}^{*}$	$a_{10}^{*}$	$b_{10}^{*}$	$L_{10}^{*}$	$a_{10}^{*}$	$b_{10}^{*}$	u'₁₀	v'₁₀	Δ ${E_{ab}}^{*}$
White	-	-	-	-	-	-	0.21	0.49	-
Gray	62	0	0	62.42	0.11	-0.41	0.21	0.49	0.60
Red	44	37	23	43.91	36.49	22.95	0.32	0.51	0.52
Yellow	87	-7	47	87.25	-6.91	46.85	0.22	0.53	0.30
Green	56	-32	0	56.25	-32.16	-0.33	0.15	0.50	0.44
Blue	36	5	-31	36.49	4.56	-30.65	0.19	0.41	0.74

Table 2. Colorimetric parameters of the target colors

LED-conbination	L1	L2	L3	L4
Intra-observer	R1-G2-B1	R2-G2-B1	R1-G1-B1	R1-G2-B2
Min	0.0017	0.0011	0.0018	0.0012
Max	0.0032	0.0032	0.0069	0.0032
Mean	0.0024	0.0024	0.0038	0.0024
Inter-observer	R1-G2-B1	R2-G2-B1	R1-G1-B1	R1-G2-B2
Min	0.0002	0.0002	0.0002	0.0005
Max	0.0188	0.0209	0.0241	0.0221
Mean	0.0039	0.0053	0.0069	0.0059

Table 3. Observer variations in the experiments

Colors	L1	L2	L3	L4	Mean
White	0.0065	0.0075	0.0075	0.0085	0.0075
Gray	0.0054	0.0057	0.0063	0.0084	0.0065
Red	0.0070	0.0096	0.0080	0.0068	0.0079
Yellow	0.0050	0.0052	0.0073	0.0045	0.0055
Green	0.0057	0.0054	0.0083	0.0081	0.0069
Blue	0.0075	0.0068	0.0079	0.0138	0.0090
Mean	0.0062	0.0067	0.0076	0.0084	0.0072

Table 4. Δ(u', v') values of each color from different LED-RGB combinations

Color	Size					θ
Color	L1	L2	L3	L4	Mean	L1	L2	L3	L4
White	0.0039	0.0079	0.0085	0.0082	0.0071	68.35	51.42	127.00	139.41
Gray	0.0042	0.0060	0.0078	0.0090	0.0067	76.46	40.88	142.17	138.45
Red	0.0076	0.0085	0.0119	0.0075	0.0089	11.27	14.79	7.09	17.26
Yellow	0.0035	0.0069	0.0093	0.0052	0.0062	35.38	163.89	151.91	172.54
Green	0.0062	0.0076	0.0087	0.0077	0.0075	95.27	74.97	134.39	132.13
Blue	0.0075	0.0066	0.0099	0.0118	0.0089	71.58	84.23	99.53	139.03
Mean	0.0055	0.0072	0.0094	0.0082		-	-	-	-

Table 5. Parameters of the observer variability ellipses from different LED-RGB primary color combinations

Combination	ΔR /nm	ΔG /nm	ΔB /nm
L1	-16	4	8
L2	20	4	8
L3	-16	-12	8
L4	-16	4	28

Table 6. Comparison of the peak wavelength of the target and matched devices with different combinations

Chunli Guo, Min Huang, Yonghui Xi, Jie Pan. Influence of LED Primary Colors on Color Matching Accuracy[J]. Acta Optica Sinica, 2020, 40(16): 1633001

Download Citation

Set citation alerts for the article

Tools

Set citation alerts for the article

Save the article for my favorites

Paper Information