NON-CONTACT OXYGEN SATURATION ESTIMATION USING AMBIENT LIGHT

Abstract: a non-contact estimation of oxygen saturation comprises pre-processing a ppg signal of light reflected from a skin of a subject illuminated by ambient light by filtering the ppg signal to obtain a smoothed pulse signal. a plurality of frequency domain and time domain features are extracted from the smoothed pulse signal and statistical parameters are computed of the time domain features. oxygen saturation is estimated for the subject based on the frequency domain features and the statistical parameters of the time domain features and an oxygen saturation estimation model trained for estimating oxygen saturation based on input frequency domain features and input statistical parameters of time domain features.

Inventor(s): Taha KHAN

CPC Classification: A61B5/14551 (using optical sensors, e.g. spectral photometrical oximeters)

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