Evaluation of Remote Photoplethysmography Measurement Conditions toward Telemedicine Applications.
Sensors (Basel)
; 21(24)2021 Dec 14.
Article
in English
| MEDLINE | ID: covidwho-1598728
ABSTRACT
Camera-based remote photoplethysmography (rPPG) is a low-cost and casual non-contact heart rate measurement method suitable for telemedicine. Several factors affect the accuracy of measuring the heart rate and heart rate variability (HRV) using rPPG despite HRV being an important indicator for healthcare monitoring. This study aimed to investigate the appropriate setup for precise HRV measurements using rPPG while considering the effects of possible factors including illumination, direction of the light, frame rate of the camera, and body motion. In the lighting conditions experiment, the smallest mean absolute R-R interval (RRI) error was obtained when light greater than 500 lux was cast from the front (among the following conditions-illuminance 100, 300, 500, and 700 lux; directions front, top, and front and top). In addition, the RRI and HRV were measured with sufficient accuracy at frame rates above 30 fps. The accuracy of the HRV measurement was greatly reduced when the body motion was not constrained; thus, it is necessary to limit the body motion, especially the head motion, in an actual telemedicine situation. The results of this study can act as guidelines for setting up the shooting environment and camera settings for rPPG use in telemedicine.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Telemedicine
/
Photoplethysmography
Type of study:
Experimental Studies
Language:
English
Year:
2021
Document Type:
Article
Affiliation country:
S21248357
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