Journal ArticleDOI
Motion artifact reduction in photoplethysmography using independent component analysis
B.S. Kim,Sun Kook Yoo +1 more
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TLDR
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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Book ChapterDOI
Photoplethysmographic assessment of arterial stiffness and endothelial function
TL;DR: In this article , a review of the measurement of EF by PPG-based flow mediated vasodilatation and its related signal processing is presented and representative studies are described and discussed.
Posted Content
DeepBeat: A multi-task deep learning approach to assess signal quality and arrhythmia detection in wearable devices.
TL;DR: A multi-task deep learning method to assess signal quality and arrhythmia event detection in wearable photoplethysmography devices for real-time detection of atrial fibrillation (AF) demonstrating high levels of accuracy and a solution for the vexing challenge of mechanical noise.
Proceedings ArticleDOI
A practical noise stress test to assess performance of automated photo-plethysmogram analysis
TL;DR: A noise stress test (NST) in which artifact-bearing (noise-added) recordings are assembled from actual recordings by selecting intervals that contain predominantly motion artifact, and the performance of automatic pulse detection and time-domain pulse rate variability analysis was evaluated.
ReportDOI
Wearable Wireless Sensor for Multi-Scale Physiological Monitoring
Ki H. Chon,Yitzhak Mendelson +1 more
TL;DR: It was found that the reconstruction algorithm consistently provides accurate estimations of the reconstructed motion and noise artifact contaminated signal s heart rates and oxygen saturation values when verified with the reference signal.
Book ChapterDOI
Detection of Motion Artifacts in Photoplethysmographic Signals: Algorithms Comparison
TL;DR: A comparison between two motion artifacts detection methodologies proposed by Couceiro et al. and Correia T. shows a better performance of the first algorithm and the great importance of both time and period domain features in the discrimination of motion artifacts from clean PPG pulses.
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.