METHOD AND DEVICE FOR GENERATING PHOTOPLETHYSMOGRAPHY SIGNALS

• Main Authors: Wu, Zejian, Wang, Bin, Wang, Shan, Cao, Jun
• Format: Patent
• Language: English
• Published: 29.12.2022
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

A method for generating PPG signals may include photographing a skin surface to generate fragment video data; extracting fragment frame images from the fragment video data; performing image quality detection on the fragment frame images to generate an image quality detection result; when the image quality detection result indicates an up-to-standard image, performing one-dimensional red and green light signal extraction on the fragment frame images to generate first red and green signals; performing signal band-pass filtering preprocessing on the first red and green signals to generate second red and green signals; performing maximum frequency difference determination on the second red and green signals to generate a first determination result; when the first determination result indicates an up-to-standard signal, performing signal-to-noise ratio determination on the second red and green signals to generate a second determination result; and when the second determination result indicates an up-to-standard signal, generating a first PPG signal.