Journal ArticleDOI
Motion artifact reduction in photoplethysmography using independent component analysis
B.S. Kim,Sun Kook Yoo +1 more
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The motion artifacts were reduced by exploiting the quasi-periodicity of the PPG signal and the independence between the P PG and the motion artifact signals by the combination of independent component analysis and block interleaving with low-pass filtering.Abstract:
Removing the motion artifacts from measured photoplethysmography (PPG) signals is one of the important issues to be tackled for the accurate measurement of arterial oxygen saturation during movement. In this paper, the motion artifacts were reduced by exploiting the quasi-periodicity of the PPG signal and the independence between the PPG and the motion artifact signals. The combination of independent component analysis and block interleaving with low-pass filtering can reduce the motion artifacts under the condition of general dual-wavelength measurement. Experiments with synthetic and real data were performed to demonstrate the efficacy of the proposed algorithm.read more
Citations
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Journal ArticleDOI
Relationship Between Measurement Site and Motion Artifacts in Wearable Reflected Photoplethysmography
TL;DR: Green-light PPG showed a higher correlation with the ECG R-R interval as compared to those obtained with infrared, and the signal from the upper arm showed less artifact than did the peripheral one, suggesting that the green- light PPG may be useful for pulse rate monitoring.
Journal ArticleDOI
Current progress of photoplethysmography and SPO2 for health monitoring.
TL;DR: The principle issues and clinical applications of PPG for monitoring oxygen saturation are reviewed and wearable unobtrusive PPG monitors are commercially available.
Journal ArticleDOI
Photoplethysmography based atrial fibrillation detection: a review.
Tania Pereira,Nate Tran,Kais Gadhoumi,Michele M. Pelter,Duc H. Do,Randall J. Lee,Rene A. Colorado,Karl Meisel,Xiao Hu +8 more
TL;DR: A thorough account of the signal processing, machine learning, and deep learning approaches used in these studies is presented, followed by a discussion of their limitations and challenges towards clinical applications.
Journal ArticleDOI
Heart Rate Estimation From Wrist-Worn Photoplethysmography: A Review
TL;DR: A comprehensive review of state-of-the-art research on heart rate estimation from wrist-worn PPG signals and brief theoretical details about PPG sensing and other potential applications–biometric identification, disease diagnosis using wrist PPG are presented.
Journal ArticleDOI
A Robust Heart Rate Monitoring Scheme Using Photoplethysmographic Signals Corrupted by Intense Motion Artifacts
TL;DR: A novel signal processing framework which utilizes two channel PPG signals and estimates HR in two stages and increases the algorithm's robustness against offtrack errors by using recursive least squares filters complemented with an additional novel technique, namely time-domain extraction.
References
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Book
Independent Component Analysis
TL;DR: Independent component analysis as mentioned in this paper is a statistical generative model based on sparse coding, which is basically a proper probabilistic formulation of the ideas underpinning sparse coding and can be interpreted as providing a Bayesian prior.
Journal ArticleDOI
Fast and robust fixed-point algorithms for independent component analysis
TL;DR: Using maximum entropy approximations of differential entropy, a family of new contrast (objective) functions for ICA enable both the estimation of the whole decomposition by minimizing mutual information, and estimation of individual independent components as projection pursuit directions.
Journal ArticleDOI
A dynamical model for generating synthetic electrocardiogram signals
TL;DR: A dynamical model based on three coupled ordinary differential equations is introduced which is capable of generating realistic synthetic electrocardiogram (ECG) signals and may be employed to assess biomedical signal processing techniques which are used to compute clinical statistics from the ECG.
BookDOI
Design of Pulse Oximeters
TL;DR: In this paper, the authors present a user interface for a pulse oximeter, based on an interface provided by Lozano-Nieto and Schowalter, with a discussion of the application of pulse oximetry.
Journal ArticleDOI
A new method for pulse oximetry possessing inherent insensitivity to artifact
M.J. Hayes,P.R. Smith +1 more
TL;DR: It is demonstrated that this new methodology results in a reduced sensitivity to common classes of motion artifact, while retaining the generality to be combined with conventional signal processing techniques.