Research on an Indoor Light Environment Comfort Evaluation Index Based on Electroencephalogram and Pupil Signals
Abstract
:1. Introduction
2. Materials and Methods
2.1. Experimental Chamber
2.2. Subjects
2.3. Data Acquisition
2.4. Stimulus Designs
2.5. Experimental Procedure
2.6. Experimental Index
2.6.1. Likert Scale of Subjective Visual Fatigue (SVF) and Subjective Preference (SP)
2.6.2. EEG Signal-to-Noise Ratio (ES) and EEG Amplitude (EA)
2.6.3. Pupil Diameter (PD)
2.7. Fatigue Quantitative Evaluation Model
- The data are divided into n groups according to the category. Categories are mainly distinguished by specific data source types. The subjective part is divided into pre-experiment and post-experiment. The objective part divides the first 1/4 into the least fatigued state and the last 1/4 into the most fatigued state according to the number of experiments.
- In the subjective part, the value of the post-experiment minus the value of the pre-experiment is the original subjective fatigue value. In the objective part, the difference between the least fatigued state and the most fatigued state is taken as the original objective fatigue value according to the specific type of data.
- The obtained objective data are standardized, and the ratio of the original objective fatigue value to the initial objective calibration value is the standardized objective fatigue value.
- Data are mapped forward or backward (according to the characteristics of the data) to the [0,1] interval;
- The CRITIC algorithm (Supplementary Materials) is used to calculate the corresponding weights of n sets of data: w1, w2, ..., wn;
- The obtained CRITIC weight is multiplied by the corresponding n sets of data quantization values and added to obtain the final fatigue quantization score.
2.8. Statistical Analysis
3. Results
3.1. Subjective Analysis
3.2. Objective Analysis
3.3. Light Environment Comfort Evaluation
3.3.1. CRITIC Weight
3.3.2. Visual Comfort Level
3.3.3. Reliability Demonstration
4. Discussion
4.1. Significance Analysis
4.2. Limitations of This Research
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Condition Number | Illuminance/lx | Correlated Color Temperature/K | Screen Brightness/% |
---|---|---|---|
1 | 75 | 6800 | 0 |
2 | 200 | ||
3 | 500 | ||
4 | 75 | 3500 | |
5 | 200 | ||
6 | 500 | ||
7 | 75 | 6800 | 50 |
8 | 200 | ||
9 | 500 | ||
10 | 75 | 3500 | |
11 | 200 | ||
12 | 500 | ||
13 | 75 | 6800 | 100 |
14 | 200 | ||
15 | 500 | ||
16 | 75 | 3500 | |
17 | 200 | ||
18 | 500 |
Authors | Year of Publication | Visual Fatigue Assessment Method |
---|---|---|
Hayes et al. [45] | 2007 | Subjective questionnaire |
Benedetto et al. [53] | 2013 | Subjective questionnaire + Critical Flicker Frequency (related to sensory perception function) + Eye blink |
Makri et al. [49] | 2015 | SSVEP |
Seo et al. [50] | 2019 | Subjective questionnaire + SSVEP |
Peng et al. [51] | 2019 | Subjective questionnaire + SSVEP |
Chai et al. [52] | 2020 | SSVEP |
Peng et al. [18] | 2021 | Subjective questionnaire + SSVEP |
Guo et al. [54] | 2021 | Subjective questionnaire |
Tian et al. [16] | 2022 | Subjective questionnaire + SSVEP + Pupil diameter + Fusion indicators (weights given based on experience) |
Ours | Subjective questionnaire + SSVEP + Pupil diameter + Fusion indicators (CRITIC weighting method, no personal experience required) |
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Tian, P.; Xu, G.; Han, C.; Zheng, X.; Zhang, K.; Du, C.; Zhang, X.; Wei, F.; Ma, Y.; Zhang, S.; et al. Research on an Indoor Light Environment Comfort Evaluation Index Based on Electroencephalogram and Pupil Signals. Electronics 2024, 13, 3411. https://doi.org/10.3390/electronics13173411
Tian P, Xu G, Han C, Zheng X, Zhang K, Du C, Zhang X, Wei F, Ma Y, Zhang S, et al. Research on an Indoor Light Environment Comfort Evaluation Index Based on Electroencephalogram and Pupil Signals. Electronics. 2024; 13(17):3411. https://doi.org/10.3390/electronics13173411
Chicago/Turabian StyleTian, Peiyuan, Guanghua Xu, Chengcheng Han, Xiaowei Zheng, Kai Zhang, Chenghang Du, Xun Zhang, Fan Wei, Yunhao Ma, Sicong Zhang, and et al. 2024. "Research on an Indoor Light Environment Comfort Evaluation Index Based on Electroencephalogram and Pupil Signals" Electronics 13, no. 17: 3411. https://doi.org/10.3390/electronics13173411