METHOD AND DEVICE FOR GENERATING PHOTOPLETHYSMOGRAPHY SIGNALS

• Main Authors: Wu, Zejian, Cao, Jun
• Format: Patent
• Language: English
• Published: 09.03.2023
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

A method for generating PPG signals may include sequentially performing single-frame red and green channel data calculation on all skin surface video data frame images of a frame image sequence of skin surface video data according to preset red and green light pixel threshold ranges to generate first red and green light signals; performing signal band-pass filtering preprocessing on the first red and green light signals to generate second red and green light digital signals; obtaining a preset signal determination identifier; determining whether to perform signal maximum frequency difference determination on the second red light signal and the second green light signal, and generating a first determination result; when the first determination result is an up-to-standard signal identifier, performing signal-to-noise ratio determination on the second red and/or green light signal to generate a second determination result; and when the second determination result is the up-to-standard signal identifier, generating a PPG signal.