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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Respiratory Modulation of Sternal Motion in the Context of Seismocardiography
TL;DR: In this article , the sternal motion of 40 subjects was recorded using an inertial measurement unit with a spirometer for reference, and three main aspects of respiratory modulation were explored: amplitude modulation, frequency modulation, and baseline wandering.
Journal ArticleDOI
Development of a Radial Pulse Monitoring System Based on a Graphene-Coated Fiber
TL;DR: A real-time low-cost wearable pulse monitoring system based on a graphene-coated fiber based on an newly multistage filter method to attenuate the noise synchronously strengthens confidence in the application of the smart fabrics in wearable sensing and home health care fields.
Investigation of Sternal Photoplethysmography – Design of a Vital Sign Patch
TL;DR: The results of this project show that it is possible to obtain reliable quasi-continuous recording of the SpO2 level and the RR from sternal PPG in many different clinical applications in the future.
Journal ArticleDOI
Software Architecture of a Wearable Device to Measure User's Vital Signal Depending on the Behavior Recognition
Dong-jin Choi,Soon Ju Kang +1 more
Journal ArticleDOI
Pre-processing of Photoplethysmographic Waveform for Amplitude Regularization
TL;DR: In this article, a post-processing method was developed to regularize amplitude of PPG waveforms and evaluate the performance of the algorithm with respect to dispersion and waveform fluctuation by means of coefficients of variation and a scaling exponent of detrended fluctuation analysis (DFA).
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.