Journal ArticleDOI
Motion artifact reduction in photoplethysmography using independent component analysis
B.S. Kim,Sun Kook Yoo +1 more
Reads0
Chats0
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
More filters
Journal ArticleDOI
Blockwise PPG Enhancement Based on Time-Variant Zero-Phase Harmonic Notch Filtering.
TL;DR: The proposed zero-phase line enhancer (ZLE), a novel single-input MA reduction algorithm based on time-variant forward-backward harmonic notch filtering was found to be superior for MA reduction and exhibited zero phase response.
Journal ArticleDOI
Stochastic Modeling Based Nonlinear Bayesian Filtering for Photoplethysmography Denoising in Wearable Devices
TL;DR: This framework is the first PPG denoising strategy that introduces waveform-modeling methods to ensure detail recovery, and a great example of algorithm fusion between stochastic signal processing and emerging deep learning methods for time-sequential biomedical signal processing.
Proceedings ArticleDOI
Motion Artifact Reduction and Data Compression of Photoplethysmo-graphic Signals utilizing Cycle by Cycle Fourier Series Analysis
TL;DR: Experimental results indicate that the proposed method is insensitive to heart rate variation, introduces negligible error in the processed PPG signals due to the additional processing, preserves all the morphological features of the PPG, provides 35 dB reduction in motion artifact and achieves a data compression factor of 12.
Journal ArticleDOI
PPG Derived Heart Rate Estimation During Intensive Physical Exercise
TL;DR: The proposed algorithm can be a reliable solution for HR estimation from noisy PPG signal and is faster and more accurate than the existing proposals.
Journal ArticleDOI
PPG signal motion artifacts correction algorithm based on feature estimation
TL;DR: The algorithm proposed in this paper can eliminate motion artifacts in PPG signal sequence well and human physiological parameters are calculated more accurate.
References
More filters
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.