中国医疗设备2016，Vol.31Issue(11)：42-45,4.DOI:10.3969/j.issn.1674-1633.2016.11.009
基于手指视频的光电容积脉搏波信号获取
Photoplethysmography Signal Acquisition Based on Finger Video
雷恒波 1莫镜清 1郭友达 2邢晓曼 1徐雅洁 1孙明山1
作者信息
- 1. 中国科学院 苏州生物医学工程技术研究所，江苏 苏州 215163
- 2. 南京理工大学 电子工程与光电技术学院，江苏 南京 210094
- 折叠
摘要
Abstract
Photoplethysmography (PPG) contains some important human physiological information. In order to easily and accurately obtain the PPG of the body, the video of the finger was obtained by using the cell phone camera. And the number of each frame image pixel gray values greater than a certain threshold could reflect the blood volume variation, and the timing curve of PPG was obtained. Then, with the empirical mode decomposition method, the timing curve was broken down into a series of intrinsic mode function (IMF). Finally, through the frequency domain analysis, the IMF in the pulse frequency range was reconstructed, achieving the PPG signal without the low-frequency and high-frequency noise baseline drift. The results calculated by using the Bland-Altman method achieved above 0.95 consistency with the PPG data synchronously measured by using the existing medical equipment. This widely applied method was of great importance for obtaining the physiological information based on PPG in telemedicine.关键词
摄像头/光电容积脉搏波/经验模态分解法/本征模函数/远程医疗Key words
camera/Photoplethysmography/empirical mode decomposition/intrinsic mode function/telemedicine分类
医药卫生引用本文复制引用
雷恒波,莫镜清,郭友达,邢晓曼,徐雅洁,孙明山..基于手指视频的光电容积脉搏波信号获取[J].中国医疗设备,2016,31(11):42-45,4.
