Remote Measurements of Heart and Respiration Rates for Telemedicine
Figure 1
Remotely obtain physiological parameters from single channel images.
Different colors of the rounded rectangles in the figure denote the procedure of different subjects. (A) A series of video frames of the upper body of a human subject recorded at night over a period of time (t0–tn). The rectangle superimposed on the subject's face indicates the region of interest for cardiovascular pulse measurement. The rectangle superimposed on the subject's chest indicates the region of interest for respiratory measurement. (B) The observed time series for cardiovascular pulse measurement (left) and respiratory measurement (right). (C) The separated source signals (independent components (ICs), IC1, IC2, and IC3) for cardiovascular pulse measurement (left) and respiratory measurement (right). (D) The recovered blood volume pulse (left) and respiratory wave (right). (E) A plot showing the frequency of the blood volume pulse (left) and respiratory wave (right). Written consent from all individuals whose photos are in figures 1 had been obtained.