Hue-Subregion Weighted Constrained Hue-Plane Preserving Camera Characterization

Fig. 6. Reflectivity datasets of DSG colorchecker, DC colorchecker, and SFU sample surface. Spectral reflectance functions of (a) DSG colorchecker (140 patches); (b) DC colorchecker (237 patches); (c) SFU sample surface (1995 samples)

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Fig. 7. Optimization results of number of hue partitions for three spectral reflectance datasets. Mean, median, and max of $Δ E$ for different numbers of hue subregions in (a) DSG spectral reflectance dataset; (b) DC spectral reflectance dataset; (c) SFU spectral reflectance dataset

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Table 1. Synthetic data characterization results under D65 illuminant

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Table 1. Synthetic data characterization results under D65 illuminant

Camera	Dataset	DC			DSG			SFU
Camera	Method	Mean	Median	Max	Mean	Median	Max	Mean	Median	Max
Nikon5100	WPPLS	1.6	0.8	6.2	1.5	0.6	5.4	1.7	1.0	5.8
	POL2	1.1	0.6	3.3	1.2	0.8	4.0	1.3	0.8	4.4
	POL3	0.8	0.4	2.4	0.7	0.4	2.5	1.1	0.7	3.4
	RPOL2	0.9	0.5	3.3	1.0	0.6	3.6	1.2	0.7	4.1
	RPOL3	0.9	0.5	3.4	0.8	0.5	2.7	1.1	0.7	3.7
	HPPCC	1.4	0.7	3.8	1.2	0.5	3.4	1.6	0.9	4.6
	NHPPCC4	1.0	0.6	3.7	0.9	0.5	2.8	1.2	0.7	4.3
	NHPPCC6	0.9	0.5	3.6	0.8	0.5	2.8	1.2	0.7	4.3
	HPPCC-WCM	0.8	0.4	3.6	0.8	0.5	2.7	1.2	0.7	4.2
	HPPCC-NWCM	0.7	0.4	3.5	0.7	0.5	2.7	1.2	0.8	4.2
SigmaSD15	WPPLS	2.9	1.7	10.2	2.8	1.7	10.7	2.8	2.0	8.1
	POL2	2.1	1.2	7.4	1.8	1.2	5.8	2.3	1.6	6.3
	POL3	1.6	0.8	5.3	1.5	1.0	4.8	1.9	1.4	5.2
	RPOL2	2.0	1.2	7.8	1.8	1.4	5.3	2.1	1.5	6.1
	RPOL3	2.2	1.1	8.0	2.0	1.3	6.6	5.7	3.6	18.2
	HPPCC	2.1	1.7	9.8	1.9	1.7	9.7	3.2	2.1	9.9
	NHPPCC4	2.0	1.4	6.6	1.9	1.4	5.8	2.2	1.6	6.3
	NHPPCC6	1.9	1.2	6.6	1.8	1.3	5.4	2.1	1.6	6.2
	HPPCC-WCM	1.9	1.1	6.6	1.6	1.3	5.1	2.1	1.5	6.1
	HPPCC-NWCM	1.8	1.2	6.6	1.4	1.3	4.6	2.0	1.5	6.1

Table 2. Synthetic data characterization results under D65 illuminant as light level decreases and increases

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Table 2. Synthetic data characterization results under D65 illuminant as light level decreases and increases

Camera	Dataset	DC divided by 2			DC multiplied by 2			SFU divided by 2			SFU multiplied by 2
Camera	Method	Mean	Median	Max	Mean	Median	Max	Mean	Median	Max	Mean	Median	Max
Nikon5100	WPPLS	1.6	0.8	6.2	1.6	1.0	6.4	1.8	1.0	6.0	1.7	1.0	6.1
	POL2	1.3	1.1	3.6	1.3	1.0	4.1	1.9	1.4	7.4	2.0	1.3	8.3
	POL3	1.2	0.9	3.9	1.1	0.7	3.9	1.9	1.3	7.7	1.9	1.2	8.0
	RPOL2	0.9	0.5	3.4	1.0	0.6	3.4	1.2	0.7	4.1	1.2	0.8	4.1
	RPOL3	0.9	0.6	3.4	0.9	0.6	3.5	1.1	0.7	3.8	1.2	0.7	3.8
	HPPCC	1.4	0.7	3.8	1.4	0.7	3.9	1.6	0.9	4.6	1.6	1.0	4.7
	NHPPCC4	1.0	0.6	3.7	1.0	0.6	3.7	1.2	0.8	4.3	1.2	0.8	4.4
	NHPPCC6	0.9	0.6	3.7	0.9	0.5	3.6	1.2	0.7	4.3	1.2	0.7	4.3
	HPPCC-WCM	0.8	0.4	3.6	0.8	0.5	3.7	1.2	0.7	4.2	1.2	0.7	4.4
	HPPCC-NWCM	0.7	0.4	3.5	0.7	0.5	3.5	1.2	0.8	4.2	1.2	0.8	4.3
SigmaSD15	WPPLS	2.9	1.7	10.4	2.9	1.8	10.6	2.8	2.1	8.4	2.8	2.2	8.4
	POL2	3.4	1.9	10.5	3.3	1.8	11.6	3.7	2.3	11.6	3.6	2.1	12.3
	POL3	3.3	1.2	9.5	3.2	1.0	13.7	3.6	2.1	12.7	3.4	1.8	13.7
	RPOL2	2.0	1.2	7.9	2.0	1.3	8.0	2.1	1.5	6.2	2.1	1.6	6.3
	RPOL3	2.2	1.1	8.0	2.2	1.1	8.1	5.7	3.7	18.9	5.8	3.7	19.1
	HPPCC	2.1	1.7	9.9	2.1	1.9	10.0	3.2	2.1	10.1	3.3	2.2	10.2
	NHPPCC4	2.0	1.4	6.7	2.1	1.4	6.7	2.2	1.6	6.7	2.2	1.6	7.1
	NHPPCC6	1.9	1.2	6.6	1.9	1.3	6.9	2.1	1.6	6.6	2.1	1.7	7.3
	HPPCC-WCM	1.9	1.1	6.6	1.9	1.2	6.7	2.1	1.5	6.3	2.1	1.5	6.7
	HPPCC-NWCM	1.8	1.2	6.7	1.8	1.2	6.7	2.0	1.5	6.2	2.0	1.5	6.1

Table 3. Synthetic data characterization results on 42 cameras

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Table 3. Synthetic data characterization results on 42 cameras

Illuminant	D65			A			F11
Illuminant	Mean	Median	Max	Mean	Median	Max	Mean	Median	Max
WPPLS	1.9	1.2	6.3	2.2	1.2	6.8	1.7	0.9	6.0
POL2	1.4	0.9	4.7	1.6	1.0	5.7	1.3	0.7	4.7
POL3	1.4	0.9	4.7	1.7	0.9	5.7	1.3	0.7	4.8
RPOL2	1.9	1.2	6.4	2.2	1.3	7.3	1.7	0.9	5.9
RPOL3	1.2	0.8	4.1	1.5	0.9	4.9	1.2	0.6	4.1
HPPCC	1.4	0.8	4.5	1.6	1.0	5.2	1.3	0.7	4.5
NHPPCC4	1.3	0.9	3.8	1.6	1.0	4.5	1.3	0.8	4.0
NHPPCC6	1.5	1.0	4.8	1.7	1.1	5.3	1.4	0.9	4.5
HPPCC-WCM	1.2	0.9	3.3	1.4	1.0	3.4	1.3	0.9	4.1
HPPCC-NWCM	1.1	0.7	3.2	1.4	1.0	4.2	1.2	0.5	4.0

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Yongheng Yin, Long Ma, Peng Li. Hue-Subregion Weighted Constrained Hue-Plane Preserving Camera Characterization[J]. Acta Optica Sinica, 2024, 44(9): 0933001

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Paper Information

Category: Vision, Color, and Visual Optics

Received: Sep. 11, 2023

Accepted: Feb. 5, 2024

Published Online: May. 6, 2024

The Author Email: Long Ma (malong1229@gmail.com)

DOI:10.3788/AOS231545

CSTR:32393.14.AOS231545

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology