Chinese Optics, Volume. 15, Issue 6, 1350(2022)
Image photoplethysmography for mental stress detection
Fig. 2. Result of iPPG signal processing. (a) iPPG signal extraction process; (b) dynamic ROI extraction process; (c) iPPG signal extracted by different ROI; (d) extraction process in R-R interval
Fig. 3. Stress-induced test and result. (a) Stress induction test process; (b) box diagram of HRV characteristic parameter change
Fig. 4. Daily mental stress detection system. (a) Process of daily mental stress detection system; (b) accuracy comparison of daily mental stress detection by different machine learning classifiers; (c) a random forest-based model for detecting daily mental stress; (d) ROC curves for daily mental stress detection based on random forest
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Zhi RAO, Bing-lin LI, Ya-ru SUI, Xiao-qiang JI, Ming-ye LI. Image photoplethysmography for mental stress detection[J]. Chinese Optics, 2022, 15(6): 1350
Category: Original Article
Received: Aug. 10, 2022
Accepted: --
Published Online: Feb. 9, 2023
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