主权项 |
1. A method for detecting cardiac arrhythmia from signals generated from video images captured of a subject of interest being monitored for cardiac function in a non-contact remote sensing environment, the method comprising:
receiving a time-series signal generated from video images captured of a region of exposed skin where a photoplethysmographic (PPG) signal of a subject of interest can be registered, said video comprising video images captured by at least one imaging channel capturing PPG signals; processing said time-series signal to extract a PPG signal for said subject; filtering said PPG signal using at least one of: an FFT-based phase preservation filter, a zero-phase digital filter, a linear time invariant filter, a linear time varying filter, a finite impulse response filter, an infinite impulse response filter, and a non-linear filter, to obtain a filtered PPG signal; detecting peak-to-peak pulse points in said filtered PPG signal; analyzing said pulse points to obtain peak-to-peak pulse dynamics; and determining whether a cardiac arrhythmia exists based on said pulse dynamics./ |