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Laser & Optoelectronics Progress, Volume. 61, Issue 15, 1530001(2024)

Melanin Index Detection by Non-Contact Diffuse Reflection Spectroscopy

Yangyang Hua, Hongxing Cai*, Meng Zhao, Tingting Wang, Jiaxin Li, Jianwei Zhou, Kang Du, Dongliang Li, Shuangshuang Ding, and Guannan Qu
Author Affiliations
  • Key Laboratory of Jilin Province for Spectral Detection Science and Technology, School of Physics, Changchun University of Science and Technology, Changchun 130022, Jilin , China
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    Figures & Tables(6)
    Non-contact diffuse reflectance spectroscopy acquisition device

    Fig. 1. Non-contact diffuse reflectance spectroscopy acquisition device

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    Skin diffuse reflectance spectra at different melanin indices

    Fig. 2. Skin diffuse reflectance spectra at different melanin indices

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    44-dimensional reflectance data after dimensionality reduction by CARS algorithm in wavelength range of 400‒980 nm

    Fig. 3. 44-dimensional reflectance data after dimensionality reduction by CARS algorithm in wavelength range of 400‒980 nm

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    R2 of six prediction models

    Fig. 4. R2 of six prediction models

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    MAE values of the prediction data of the six models

    Fig. 5. MAE values of the prediction data of the six models

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    Performances of six regression models on the same validation dataset. (a) KNN regression model; (b) linear regression model; (c) ridge regression model; (d) decision regression model; (e) lasso regression model; (f) SVR model

    Fig. 6. Performances of six regression models on the same validation dataset. (a) KNN regression model; (b) linear regression model; (c) ridge regression model; (d) decision regression model; (e) lasso regression model; (f) SVR model

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    Yangyang Hua, Hongxing Cai, Meng Zhao, Tingting Wang, Jiaxin Li, Jianwei Zhou, Kang Du, Dongliang Li, Shuangshuang Ding, Guannan Qu. Melanin Index Detection by Non-Contact Diffuse Reflection Spectroscopy[J]. Laser & Optoelectronics Progress, 2024, 61(15): 1530001

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    Paper Information

    Category: Spectroscopy

    Received: Jun. 12, 2023

    Accepted: Jul. 24, 2023

    Published Online: Aug. 5, 2024

    The Author Email: Hongxing Cai (ciomsz@126.com)

    DOI:10.3788/LOP231520

    CSTR:32186.14.LOP231520

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology