Mr. Qin-Wu Zhou Profile

Qin-Wu Zhou

at Xi'an Jiaotong Univ

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Proceedings Article | 20 March 2015 Paper

Heart rate measurement based on face video sequence

Fang Xu, Qin-Wu Zhou, Peng Wu, Xing Chen, Xiaofeng Yang, Hong-jian Yan

Proceedings Volume 9414, 941435 (2015) https://doi.org/10.1117/12.2083315

KEYWORDS: Heart, Video, Signal processing, Bandpass filters, RGB color model, Oximeters, Cameras, Linear filtering, Optical filters, Interference (communication)

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This paper proposes a new non-contact heart rate measurement method based on photoplethysmography (PPG) theory. With this method we can measure heart rate remotely with a camera and ambient light. We collected video sequences of subjects, and detected remote PPG signals through video sequences. Remote PPG signals were analyzed with two methods, Blind Source Separation Technology (BSST) and Cross Spectral Power Technology (CSPT). BSST is a commonly used method, and CSPT is used for the first time in the study of remote PPG signals in this paper. Both of the methods can acquire heart rate, but compared with BSST, CSPT has clearer physical meaning, and the computational complexity of CSPT is lower than that of BSST. Our work shows that heart rates detected by CSPT method have good consistency with the heart rates measured by a finger clip oximeter. With good accuracy and low computational complexity, the CSPT method has a good prospect for the application in the field of home medical devices and mobile health devices.

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