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Volume 22
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10.3390/s22239497
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Article

Investigation of the Hue–Wavelength Response of a CMOS RGB-Based Image Sensor

by
Hyeon-Woo Park
1,
Ji-Won Choi
1,
Ji-Young Choi
2,*,
Kyung-Kwang Joo
1,* and
Na-Ri Kim
1
1
Center for Precision Neutrino Research, Department of Physics, Chonnam National University, Yongbong-ro 77, Puk-gu, Gwangju 61186, Republic of Korea
2
Department of Fire Safety, Seoyeong University, Seogang-ro 1, Puk-gu, Gwangju 61268, Republic of Korea
*
Authors to whom correspondence should be addressed.
Sensors 2022, 22(23), 9497; https://doi.org/10.3390/s22239497
Submission received: 7 November 2022 / Revised: 30 November 2022 / Accepted: 2 December 2022 / Published: 5 December 2022
(This article belongs to the Special Issue Optical Spectral Sensing and Imaging Technology)
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Abstract

In this study, a non-linear hue–wavelength (H-W) curve was investigated from 400 to 650 nm. To date, no study has reported on H-W relationship measurements, especially down to the 400 nm region. A digital camera mounted with complementary metal oxide semiconductor (CMOS) image sensors was used. The obtained digital images of the sample were based on an RGB-based imaging analysis rather than multispectral imaging or hyperspectral imaging. In this study, we focused on the raw image to reconstruct the H-W curve. In addition, several factors affecting the digital image, such as exposure time or international organization for standardization (ISO), were investigated. In addition, cross check of the H-W response using laser was performed. We expect that our method will be useful as an auxiliary method in the future for obtaining the fluor emission wavelength information.
Keywords: color space; H-W curve; digital camera; CMOS sensor color space; H-W curve; digital camera; CMOS sensor

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MDPI and ACS Style

Park, H.-W.; Choi, J.-W.; Choi, J.-Y.; Joo, K.-K.; Kim, N.-R. Investigation of the Hue–Wavelength Response of a CMOS RGB-Based Image Sensor. Sensors 2022, 22, 9497. https://doi.org/10.3390/s22239497

AMA Style

Park H-W, Choi J-W, Choi J-Y, Joo K-K, Kim N-R. Investigation of the Hue–Wavelength Response of a CMOS RGB-Based Image Sensor. Sensors. 2022; 22(23):9497. https://doi.org/10.3390/s22239497

Chicago/Turabian Style

Park, Hyeon-Woo, Ji-Won Choi, Ji-Young Choi, Kyung-Kwang Joo, and Na-Ri Kim. 2022. "Investigation of the Hue–Wavelength Response of a CMOS RGB-Based Image Sensor" Sensors 22, no. 23: 9497. https://doi.org/10.3390/s22239497

APA Style

Park, H.-W., Choi, J.-W., Choi, J.-Y., Joo, K.-K., & Kim, N.-R. (2022). Investigation of the Hue–Wavelength Response of a CMOS RGB-Based Image Sensor. Sensors, 22(23), 9497. https://doi.org/10.3390/s22239497

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