標題: Measurement of heart rate variability using off-the-shelf smart phones
作者: Huang, Ren-You
Dung, Lan-Rong
電機工程學系
電控工程研究所
Department of Electrical and Computer Engineering
Institute of Electrical and Control Engineering
關鍵字: Cardiac physiology;Non-contact photoplethysmography;Blood volume pulse;Heart rate variability
公開日期: 29-Jan-2016
摘要: Background: The cardiac parameters, such as heart rate (HR) and heart rate variability (HRV), are very important physiological data for daily healthcare. Recently, the camera-based photoplethysmography techniques have been proposed for HR measurement. These techniques allow us to estimate the HR contactlessly with low-cost camera. However, the previous works showed limit success for estimating HRV because the R-R intervals, the primary data for HRV calculation, are sensitive to noise and artifacts. Methods: This paper proposed a non-contact method to extract the blood volume pulse signal using a chrominance-based method followed by a proposed CWT-based denoising technique. The R-R intervals can then be obtained by finding the peaks in the denoised signal. In this paper, we taped 12 video clips using the frontal camera of a smart phone with different scenarios to make comparisons among our method and the other alternatives using the absolute errors between the estimated HRV metrics and the ones obtained by an ECG-accurate chest band. Results: As shown in experiments, our algorithm can greatly reduce absolute errors of HRV metrics comparing with the related works using RGB color signals. The mean of absolute errors of HRV metrics from our method is only 3.53 ms for the static-subject video clips. Conclusions: The proposed camera-based method is able to produce reliable HRV metrics which are close to the ones measured by contact devices under different conditions. Thus, our method can be used for remote health monitoring in a convenient and comfortable way.
URI: http://dx.doi.org/10.1186/s12938-016-0127-8
http://hdl.handle.net/11536/129653
ISSN: 1475-925X
DOI: 10.1186/s12938-016-0127-8
期刊: BIOMEDICAL ENGINEERING ONLINE
Volume: 15
起始頁: 0
結束頁: 0
Appears in Collections:Articles