An Improvement for Video-based Heart Rate Variability Measurement
Résumé
Remote photoplethysmography (RPPG) is a technique to measure the physiological signs (such as Heart Rate) remotely. Compared with the conventional photoplethysmography (PPG), the RPPG provides long term monitoring without contact equipment and makes the application possible and comfortable in daily life. Heart Rate Variability (HRV) is a medical index which is calculated as the interval of the heartbeats. It has been proved that the HRV can be used as a biomarker for the autonomic nervous system (ANS) so that the features of HRV are possible to be utilized to detect the human stress and other emotion states [1] [2]. To make the RPPG method works more effectively in human emotion states detection, the measurement of HRV should be improved. In this paper, we propose to use the slope sum function (SSF) to improve the interbeat interval (IBI) detection. The performance of this new method was evaluated with the HRV features which can be used for emotion detection. The results showed that this new method has improved the accuracy of the HRV measurement in both frequency domain and time domain.
Mots clés
autonomic nervous system
human stress
RPPG method
interbeat interval detection
HRV features
HRV measurement
human emotion state detection
Heart rate variability
video-based heart rate variability measurement
slope sum function
Frequency-domain analysis
frequency domain
Measurement uncertainty
time domain
Stress
heart rate variability (hrv)
feature extraction
slope sum function (SSF)
neurophysiology
emotion recognition
patient monitoring
remote photoplethysmography (RPPG)
photoplethysmography
video signal processing
physiological signs
medical index