The value of polarization in camera-based photoplethysmography

被引：24

作者：

Trumpp, Alexander ^{[1
]}

Bauer, Philipp L. ^{[1
]}

Rasche, Stefan ^{[2
]}

Malberg, Hagen ^{[1
]}

Zaunseder, Sebastian ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Biomed Engn, Fac Elect & Comp Engn, D-01062 Dresden, Germany

[2] Tech Univ Dresden, Fac Med Carl Gustav Carus, Herzzentrum Dresden, Dept Cardiac Surg, D-01062 Dresden, Germany

来源：

BIOMEDICAL OPTICS EXPRESS | 2017年 / 8卷 / 06期

关键词：

SKIN; BLOOD; PULSE;

D O I：

10.1364/BOE.8.002822

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Camera-based photoplethysmography (cbPPG) is a novel measuring technique that permits the remote acquisition of cardiovascular signals using video cameras. Research still lacks in fundamental studies to reach a deeper technical and physiological understanding. This work analyzes the employment of polarization filtration to (i) assess the gain for the signal quality and (ii) draw conclusions about the cbPPG signal's origin. We evaluated various forehead regions of 18 recordings with different color and filter settings. Our results prove that for an optimal illumination, the perpendicular filter setting provides a significant benefit. The outcome supports the theory that signals arise from blood volume changes. For lateral illumination, ballistocardiographic effects dominate the signal as polarization's impact vanishes. (C) 2017 Optical Society of America

引用

页码：2822 / 2834

页数：13

共 31 条

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