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Laser & Optoelectronics Progress, Volume. 56, Issue 2, 022201(2019)

Method for Glare Measurement Based on a Digital Camera Image in Interior Lighting

Huijuan Tian1,2、*, Zhen Hong2,3, Tiantian Hao2,3, and Hui Zhang1,2
Author Affiliations
  • 1 Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, School of Electrical Engineering & Automation, Tianjin Polytechnic University, Tianjin 300387, China;
  • 2 Engineering Research Center of the Ministry of Education on High Power Solid State Lighting Application System, Tianjin 300387, China
  • 3 School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (23)
    Cited By (2)
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    Figures & Tables(12)
    Position index coordinate system with the observer position as the origin

    Fig. 1. Position index coordinate system with the observer position as the origin

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    Pixel extraction spatial coordinate system

    Fig. 2. Pixel extraction spatial coordinate system

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    Position index coordinate system with the observer position as the origin

    Fig. 3. Position index coordinate system with the observer position as the origin

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    Characteristic curve of photosensitive material

    Fig. 4. Characteristic curve of photosensitive material

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    Experiment setup for luminance calibration

    Fig. 5. Experiment setup for luminance calibration

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    Serial number of the six sources

    Fig. 6. Serial number of the six sources

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    UGR glare test software interface and the calculation results from image information extraction

    Fig. 7. UGR glare test software interface and the calculation results from image information extraction

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    Relationship between image grey-scale and logarithm of exposure

    Fig. 8. Relationship between image grey-scale and logarithm of exposure

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    Measured data and fitted luminance function

    Fig. 9. Measured data and fitted luminance function

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    • Table 1. Contrast relationship between the measured and calculated values of position index

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      Table 1. Contrast relationship between the measured and calculated values of position index

      Serial number oflighting sources123456
      Measuredposition index1.3121.3051.4181.4061.6241.592
      Calculatedposition index1.2971.3111.3961.4241.6551.617
      Relative errorδ /%1.1430.4601.5511.2801.9091.570

    • Table 2. Contrast relationship between the measured and calculated values of solid angle

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      Table 2. Contrast relationship between the measured and calculated values of solid angle

      Serial number oflighting sources123456
      Measured solidangle /(10-3 sr)0.3340.3240.6080.5831.2711.189
      Calculated solidangle /(10-3 sr)0.3300.3380.6160.6121.3631.269
      Relative errorδ /%1.1984.3211.3164.9747.2386.728

    • Table 3. Comparison between the calculated and measured values of the luminance

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      Table 3. Comparison between the calculated and measured values of the luminance

      Serial number of lighting sources123456
      Measured luminance /( cd·m-2 )818.021717.1321108.101800.7321051.7021074.403
      Calculated luminance /( cd·m-2 )836.734756.2481082.397824.6721081.1631051.385
      Relative error δ /%2.2885.4552.3202.9902.8012.142
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    Huijuan Tian, Zhen Hong, Tiantian Hao, Hui Zhang. Method for Glare Measurement Based on a Digital Camera Image in Interior Lighting[J]. Laser & Optoelectronics Progress, 2019, 56(2): 022201

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    Paper Information

    Category: Optical Design and Fabrication

    Received: Jun. 28, 2018

    Accepted: Aug. 2, 2018

    Published Online: Aug. 1, 2019

    The Author Email: Tian Huijuan (tianhjgx@126.com)

    DOI:10.3788/LOP56.022201

    Topics

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