title: Noncontact measurement of heart rate using facial video illuminated under natural light and signal weighted analysis.
abstract: Non-contact and remote measurements of vital physical signals are important for reliable and comfortable physiological self-assessment. We presented a novel optical imaging-based method to measure the vital physical signals. Using a digital camera and ambient light, the cardiovascular pulse waves were extracted better from human color facial videos correctly. And the vital physiological parameters like heart rate were measured using a proposed signal-weighted analysis method. The measured HRs consistent with those measured simultaneously with reference technologies (r=0.94, p<0.001 for HR). The results show that the imaging-based method is suitable for measuring the physiological parameters, and provide a reliable and comfortable measurement mode. The study lays a physical foundation for measuring multi-physiological parameters of human noninvasively.
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, P.R. China.|Precision Engineering Institute, Henan Polytechnic University, 2001 Shiji Road, Shanyang District, Jiaozuo, P.R. China.
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Yan
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, P.R. China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, P.R. China.
authors.forename: Lifeng
authors.initials: L
authors.lastname: Yao
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, 92 Weijin Road, Nankai District, Tianjin, P.R. China.
authors.forename: Jianfei
authors.initials: J
authors.lastname: Ouyang
mesh_terms: D000328:Adult; D003116:Color; D004867:Equipment Design; D005145:Face / Q000502:physiology; D005260:Female; D006339:Heart Rate; D006801:Humans; D008027:Light; D008297:Male; D061848:Optical Imaging / Q000295:instrumentation / Q000379:methods*; D017156:Photoplethysmography / Q000295:instrumentation / Q000379:methods*; D014741:Video Recording / Q000295:instrumentation / Q000379:methods*; D055815:Young Adult
keywords: Biomedical engineering; blood pressure; heart rate; noncontact cardiovascular measurement; pulse wave