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Chinese Journal of Lasers, Volume. 50, Issue 3, 0307110(2023)

Non‐Contact and In Vivo Polarization Imaging Method for Measuring Facial Skin Structures and Characteristics

Yuxin Zhang1, Zhipeng Fan1, Haoyu Zhai1, Honghui He1、*, Yi Wang2、**, Chao He3, and Hui Ma1
Author Affiliations
  • 1Guangdong Research Center of Polarization Imaging and Measurement Engineering Technology, Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, Guangdong, China
  • 2Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China
  • 3Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
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    Polarization imaging system for human facial skin parameters measurement. (a) Schematic of the system; (b) design of the system

    Fig. 1. Polarization imaging system for human facial skin parameters measurement. (a) Schematic of the system; (b) design of the system

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    Imaging results of a volunteer’s partial forehead skin under different polarization imaging modes. (a) Non-polarized imaging (NPI); (b) parallel-polarized imaging (PPI); (c) cross-polarized imaging (CPI)

    Fig. 2. Imaging results of a volunteer’s partial forehead skin under different polarization imaging modes. (a) Non-polarized imaging (NPI); (b) parallel-polarized imaging (PPI); (c) cross-polarized imaging (CPI)

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    Measurements results of L* in three imaging modes. (a)-(c) Imaging results of L* of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of L* value of overall facial skin in three imaging modes, ** represents PL*of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

    Fig. 3. Measurements results of L* in three imaging modes. (a)-(c) Imaging results of L* of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of L* value of overall facial skin in three imaging modes, ** represents P<0.01; (e) statistical results of L*of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

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    Measurements results of a* in three imaging modes. (a)-(c) Imaging results of a* of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of a* of overall facial skin in three imaging modes, ** represents Pa* of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

    Fig. 4. Measurements results of a* in three imaging modes. (a)-(c) Imaging results of a* of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of a* of overall facial skin in three imaging modes, ** represents P<0.01; (e) statistical results of a* of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

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    Measurements results of b* in three imaging modes. (a)-(c) Imaging results of b* of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of b* of overall facial skin in three imaging modes, ** represents Pb* in cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

    Fig. 5. Measurements results of b* in three imaging modes. (a)-(c) Imaging results of b* of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of b* of overall facial skin in three imaging modes, ** represents P<0.01; (e) statistical results of b* in cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

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    ITA measurements results in three imaging modes. (a)-(c) Imaging results of ITA of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of ITA of overall facial skin in three imaging modes, ** represents P<0.01; (e) statistical results of ITA of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

    Fig. 6. ITA measurements results in three imaging modes. (a)-(c) Imaging results of ITA of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of ITA of overall facial skin in three imaging modes, ** represents P<0.01; (e) statistical results of ITA of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

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    Measurements results of t in three imaging modes. (a)-(c) Imaging results of t of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of t of overall facial skin in three imaging modes, ** represents Pt of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

    Fig. 7. Measurements results of t in three imaging modes. (a)-(c) Imaging results of t of partial forehead region in NPI, PPI and CPI modes, respectively; (d) statistical results of t of overall facial skin in three imaging modes, ** represents P<0.01; (e) statistical results of t of cheek, upper eyelid, forehead, nose and perioral region in three imaging modes

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    • Table 1. Parameters measurement results of whole facial skin under different polarization imaging modes, where ** represents a significant difference among parameters measurement results in different polarization imaging modes (P<0.01)

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      Table 1. Parameters measurement results of whole facial skin under different polarization imaging modes, where ** represents a significant difference among parameters measurement results in different polarization imaging modes (P<0.01)

      ParameterMean±SDMean
      NPIPPICPI
      L* value /arb.units68.46±3.2565.84±3.2159.86±3.42**64.72±4.87
      a* value /arb.units17.04±1.4218.64±1.6920.89±1.70**18.86±2.24
      b* value /arb.units23.11±0.9324.06±1.0125.18±0.72**24.12±1.22
      Individual typological angle（ITA）/（°）37.78±5.0632.59±6.0320.84±6.70**30.40±9.24
      t value /arb.units40.76±9.7872.62±14.3217.29±3.33**43.56±24.97
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    Yuxin Zhang, Zhipeng Fan, Haoyu Zhai, Honghui He, Yi Wang, Chao He, Hui Ma. Non‐Contact and In Vivo Polarization Imaging Method for Measuring Facial Skin Structures and Characteristics[J]. Chinese Journal of Lasers, 2023, 50(3): 0307110

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    Paper Information

    Category: Biomedical Optical Imaging

    Received: Sep. 14, 2022

    Accepted: Dec. 15, 2022

    Published Online: Feb. 6, 2023

    The Author Email: He Honghui (he.honghui@sz.tsinghua.edu.cn), Wang Yi (prof.wangyi@foxmail.com)

    DOI:10.3788/CJL221241

    Topics

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