FIELD: medicine.
SUBSTANCE: group of inventions relates to medical equipment, specifically to means for extracting physiological information from electromagnetic radiation emitted or reflected by a subject. Device comprises an interface for receiving a data stream derived from detected electromagnetic radiation, the data stream comprising a first sequence of signal samples indicative of various spectral portions, a data decomposer configured for splitting the data stream into at least two deduced staggered sequences of registered signal samples, wherein each of the deduced staggered sequences represents a defined spectral portion and comprises indicative signal samples spaced in time, a data processor configured for generating artificial samples under consideration of proximate indicative signal samples so as to at least partially replace blank spaces between the indicative signal samples such that a supplemented data stream is generated. Method is implemented by using a device including a storage medium containing a computer program.
EFFECT: use of inventions improves the accuracy of signal reception, including in cases of poor illumination and strong movement.
15 cl, 9 dwg
