APPARATUS AND METHOD FOR DETECTING AND REMOVING ARTIFACTS IN OPTICALLY ACQUIRED BIOLOGICAL SIGNALS

摘要

Systems and methods that can distinguish clean from corrupted PPG signals under various types of motions and reconstruct the MNA contaminated data segments, such that biological parameters, e.g., heart rates and SpO2 values, can be accurately estimated, are disclosed.

主权项

1. A method for determining whether motion and noise artifacts (MNA) are present in a segment of photoplethysmography (PPG) data, the method comprising:
determining a plurality of time domain features for each segment from a plurality of test segments of the PPG data, the plurality of test segments including segments without motion and noise artifacts and other segments with motion and noise artifacts; the plurality of time domain features for said each segment from the plurality of test segments constituting a training set;using the training set to train a support vector machine (SVM), training resulting in a trained SVM;
determining the plurality of time domain features for the segment; and using the trained SVM to determine whether motion and noise artifacts are present in the segment.