Color evaluation of color image based on color space

编号/颜色	01/Dark skin	02/Light skin	03/Blue sky	04/Foliage	05/Blue flower	06/Bluish green
R\|L^*	114\|37.54	195\|65.20	93\|50.37	91\|43.13	129\|55.34	97\|71.36
G\|a^*	81\|12.02	148\|14.82	122\|-1.57	108\|-14.63	128\|11.45	191\|-32.72
B\|b^*	68\|13.33	128\|17.55	156\|-21.43	65\|22.12	176\|-25.29	171\|1.64
编号/颜色	07/Orange	08/Purplish blue	09/Moderate red	10/Pruple	11/Yellow green	12/Orange yellow
R\|L^*	221\|61.37	71\|40.71	193\|49.86	92\|30.12	160\|72.44	228\|70.92
G\|a^*	123\|32.88	91\|16.91	82\|45.93	57\|24.91	189\|-27.46	161\|15.58
B\|b^*	48\|55.16	170\|-45.09	97\|13.88	106\|-22.61	62\|58.47	41\|66.54
编号/颜色	13/Blue	14/Green	15/Red	16/Yellow	17/Magenta	18/Cyan
R\|L^*	40\|29.62	71\|55.64	174\|40.55	237\|80.98	188\|51.01	0\|52.12
G\|a^*	63\|21.43	150\|-40.76	51\|49.97	198\|-1.04	84\|49.88	138\|-24.61
B\|b^*	147\|-49.03	73\|33.27	57\|25.46	20\|80.03	151\|-16.93	168\|-26.18
编号/颜色	19/White（.05^*）	20/Neutral 8（.23^*）	21/Neutral 6.5（.44^*）	22/Neutral 5（.70^*）	23/Neutral 6.5（.44^*）	24/Black
R\|L^*	245\|96.54	200\|81.27	161\|66.79	121\|50.87	83\|35.68	49\|20.48
G\|a^*	245\|-0.69	202\|-0.61	163\|-0.65	121\|-0.06	84\|-0.22	49\|0.05
B\|b^*	242\|1.35	202\|-0.24	163\|-0.43	122\|-0.25	86\|-1.21	51\|-0.97

Table 2. Part of the index data of this experiment

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Table 2. Part of the index data of this experiment

指标序号	F₁		F₂		F₃		F₄
指标序号	CIQA	Imatest3.7	CIQA	Imatest3.7	CIQA	Imatest3.7	CIQA	Imatest3.7
1	119.059 0	119.400 0	10.226 4	10.329 1	11.504 7	11.473 7	0.022 4	0.015 0
2	115.501 2	116.600 0	10.683 5	10.697 8	12.236 6	12.223 9	0.022 5	0.023 0
$⋮$	$⋮$	$⋮$	$⋮$	$⋮$	$⋮$	$⋮$	$⋮$	$⋮$
759	60.049 4	60.900 0	19.861 0	19.906 8	37.421 7	37.484 7	0.015 5	0.014 0
760	56.856 1	57.290 0	20.507 1	20.533 1	40.105 7	40.190 0	0.025 6	0.026 0

Table 3. Comparison description of the algorithm and Imatest3. 7
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Table 3. Comparison description of the algorithm and Imatest3. 7
提取方式时间/min
CIQA Imatest3.7 CIQA Imatest3.7
自动提取 698张 - 112 -
手动提取 62张 760张 17 437

Table 4. Correlation coefficient
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Table 4. Correlation coefficient
F₁ F₂ F₃ F₄ F₅ F₆ F₇ F₈
R 0.98 0.97 0.99 0.97 0.99 0.99 1.00 0.95

Table 5. Weight value of subjective and objective indicators

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Table 5. Weight value of subjective and objective indicators

	w₁	w₂	w₃	w₄
F₁	0.100 0	0.127 0	0.113 5	0.111 8
F₂	0.250 0	0.122 8	0.186 4	0.184 5
F₃	0.250 0	0.122 3	0.186 2	0.186 2
F₄	0.075 0	0.126 9	0.101 0	0.108 3
F₅	0.075 0	0.126 3	0.101 0	0.092 2
F₆	0.075 0	0.125 7	0.100 4	0.103 7
F₇	0.075 0	0.123 2	0.099 1	0.096 5
F₈	0.100 0	0.124 8	0.112 4	0.116 9

Table 6. Normalized index data（different dimensions）

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Table 6. Normalized index data（different dimensions）

手机序号	F₁	F₂	F₃	F₄	F₅	F₆	F₇	F₈
C₁	10.066 0	4.697 0	11.428 3	0.076 0	0.089 0	0.106 1	0.140 1	10.188 0
C₂	12.942 1	4.890 2	11.861 9	0.072 9	0.081 1	0.101 8	0.138 0	8.467 9
C₃	9.643 2	5.002 2	11.7008	0.095 6	0.115 3	0.135 5	0.191 2	11.234 0
C₄	11.394 2	4.880 3	11.645 8	0.090 0	0.101 7	0.120 2	0.151 8	12.926 0
C₅	12.559 3	4.946 4	13.045 2	0.091 6	0.108 4	0.128 8	0.174 1	9.676 5
C₆	12.800 0	5.488 7	12.421 7	0.089 7	0.111 6	0.131 0	0.177 2	11.874 0
C₇	11.732 5	4.833 7	11.605 4	0.083 1	0.100 6	0.125 5	0.172 3	9.232 3
C₈	14.389 4	5.235 1	14.009 5	0.093 0	0.105 9	0.127 9	0.168 1	11.606 0
C₉	10.113 5	5.148 5	11.654 4	0.074 0	0.091 0	0.116 4	0.149 7	10.265 0
C₁₀	15.846 6	6.205 0	14.528 3	0.093 5	0.110 9	0.132 1	0.149 7	18.491 0

Table 7. Positive and negative ideal solutions and ranking of image quality effects of mobile phones

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Table 7. Positive and negative ideal solutions and ranking of image quality effects of mobile phones

指标	C₁	C₂	C₃	C₄	C₅	C₆	C₇	C₈	C₉	C₁₀
正理想解	0.201 1	0.333 5	0.655 2	0.398 9	0.552 1	0.594 1	0.403 5	0.660 6	0.244 6	0.920 2
负理想解	0.884 6	0.892 0	0.677 9	0.739 3	0.596 6	0.508 4	0.728 5	0.427 8	0.793 9	0.249 7
u_i	0.814 8	0.727 9	0.508 5	0.649 5	0.519 4	0.461 1	0.643 6	0.393 0	0.764 5	0.213 4
择优排序	1	3	7	4	6	8	5	9	2	10
对比方案2	C₁	C₂	C₃	C₄	C₅	C₆	C₇	C₈	C₉	C₁₀
u_i	0.819 2	0.894 3	0.483 1	0.589 5	0.465 3	0.405 5	0.662 2	0.366 8	0.788 1	0.213 7
手机排序	2	1	6	5	7	8	4	9	3	10

Table 8. Comparison of subjective and objective evaluation

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Table 8. Comparison of subjective and objective evaluation

手机序号	F₁得分	F₂得分	F₃得分	F₄得分	F₅得分	F₆得分	F₇得分	F₈得分	CIQA得分	客观评价等级^［30］	主流算法得分^［31］
C₁	9.318 4	10.000 0	10.000 0	8.663 7	7.677 0	8.730 2	9.621 2	8.283 9	8.148	好	1.391 08
C₂	4.682 0	8.719 0	8.601 3	10.000 0	10.000 0	10.000 0	10.000 0	10.000 0	7.279	好	1.328 68
C₃	10.000 0	7.976 1	9.121 1	0.000 0	0.000 0	0.000 0	0.000 0	7.240 8	5.085	一般	1.256 78
C₄	7.177 4	8.784 6	9.298 6	2.469 8	3.964 6	4.540 5	7.407 0	5.552 3	6.495	较好	1.297 43
C₅	5.299 2	8.345 7	4.784 4	1.750 0	2.025 7	1.984 1	3.220 9	8.794 2	5.194	一般	1.239 76
C₆	4.911 1	4.749 8	6.795 6	2.606 6	1.099 8	1.337 0	2.633 8	6.602 4	4.611	差	1.267 19
C₇	6.632 0	9.093 0	9.428 8	5.486 3	4.294 8	2.989 3	3.553 3	9.237 4	6.436	较好	1.327 70
C₈	2.349 0	6.431 4	1.673 7	1.140 9	2.743 4	2.268 4	4.345 6	6.869 2	3.930	差	1.109 47
C₉	9.241 8	7.005 9	9.270 7	9.514 0	7.097 3	5.686 5	7.807 6	8.206 9	7.645	好	1.351 24
C₁₀	0.000 0	0.000 0	0.000 0	0.930 4	1.287 6	1.019 4	7.805 1	0.000 0	2.134	差	1.008 53

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Xin ZHANG, Ji-hong QIAO, Hui-yan ZHANG, Yan ZHANG, Xin ZHANG, Ji-ping XU. Color evaluation of color image based on color space[J]. Chinese Journal of Liquid Crystals and Displays, 2023, 38(11): 1490

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Paper Information

Category: Research Articles

Received: Jan. 9, 2023

Accepted: --

Published Online: Nov. 29, 2023

The Author Email: Xin ZHANG (qiaojh@btbu.edu.cn), Ji-hong QIAO (qiaojh@btbu.edu.cn)

DOI:10.37188/CJLCD.2023-0007

Topics

Table 1. RGB value and L*a*b* value of the ColorChecker standard twenty-four color cards

Table 1. RGB value and L*a*b* value of the ColorChecker standard twenty-four color cards

Table 2. Part of the index data of this experiment

Table 2. Part of the index data of this experiment

Table 3. Comparison description of the algorithm and Imatest3. 7

Table 3. Comparison description of the algorithm and Imatest3. 7

Table 4. Correlation coefficient

Table 4. Correlation coefficient

Table 5. Weight value of subjective and objective indicators

Table 5. Weight value of subjective and objective indicators

Table 6. Normalized index data（different dimensions）

Table 6. Normalized index data（different dimensions）

Table 7. Positive and negative ideal solutions and ranking of image quality effects of mobile phones

Table 7. Positive and negative ideal solutions and ranking of image quality effects of mobile phones

Table 8. Comparison of subjective and objective evaluation

Table 8. Comparison of subjective and objective evaluation

Table 1. RGB value and Lab* value of the ColorChecker standard twenty-four color cards

Table 1. RGB value and Lab* value of the ColorChecker standard twenty-four color cards