CLIFTON DAVID ANDREW,MONTOYA MAURICIO CHRISTIAN VILLARROEL,TARASSENKO LIONEL
申请号：
IN954/DELNP/2014
公开号：
IN2014DN00954A
申请日:
2014.02.10
申请国别(地区):
IN
年份:
2016
代理人:
摘要：
A method of remote monitoring of vital signs by detecting the PPG signal in an image of a subject taken by a video camera such as a webcam. The PPG signal is identified by auto regressive analysis of ambient light reflected from a region of interest on the subject s skin. Frequency components of the ambient light and aliasing artefacts resulting from the frame rate of the video camera are cancelled by auto regressive analysis of ambient light reflected from a region of interest not on the subject s skin e.g. in the background. This reveals the spectral content of the ambient light allowing identification of the subject s PPG signal. Heart rate oxygen saturation and breathing rate are obtained from the PPG signal. The values can be combined into a wellness index based on a statistical analysis of the values.
