MOTION AND NOISE ARTIFACT DETECTION AND RECONSTRUCTION ALGORITHMS FOR PHOTOPLETHYSMOGRAM AND EQUIVALENT SIGNALS

摘要

A pulse oximeter embedded with a novel motion and noise artifact (MNA) detection algorithm based on extraction of time-varying spectral features that are unique to the clean and corrupted components.

主权项

1. A computer implemented method for detection of motion and noise artifacts in a Photoplethysmogram (PPG) or equivalent signal, the computer implemented method comprising:
obtaining a time frequency spectrum of a segment of the PPG or equivalent signal; obtaining, from the time frequency spectrum, a noise quality index for the segment; the noise quality index being used to determine whether a segment is corrupted by motion and noise artifacts; and applying a statistical learning method to determine whether the segment is corrupted by motion and noise artifacts or not corrupted by motion and noise artifacts.