title: Oxygen saturation determined using a novel wavelet ratio surface.
abstract: A wavelet-based method is presented for oxygen saturation measurement using photoplethysmogram signals from a standard pulse oximeter device. The transform moduli of both red and infrared signals are used to derive a novel wavelet ratio surface. Projection of the pulse component onto this surface allows optimal derivation of oxygen saturation.
authors.affiliation: CardioDigital Ltd., Elvingston Science Centre, Glasdmuir, EH33 1EH East Lothian, Scotland, UK. p.addison@cardiodigital.com
authors.forename: Paul S
authors.initials: PS
authors.lastname: Addison
authors.forename: James N
authors.initials: JN
authors.lastname: Watson
mesh_terms: D000465:Algorithms; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D006801:Humans; D010092:Oximetry / Q000379:methods*; D010100:Oxygen / Q000097:blood*; D017156:Photoplethysmography / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted
chemical_list: D010100:Oxygen