Results 21 to 30 of about 196,483 (296)

Variational Mode Decomposition for Raman Spectral Denoising

open access: yesMolecules, 2023
As a fast and non-destructive spectroscopic analysis technique, Raman spectroscopy has been widely applied in chemistry. However, noise is usually unavoidable in Raman spectra. Hence, denoising is an important step before Raman spectral analysis. A novel
Xihui Bian   +4 more
doaj   +1 more source

Turbulence Time Series Data Hole Filling using Karhunen-Loeve and ARIMA methods [PDF]

open access: yes, 2007
Measurements of optical turbulence time series data using unattended instruments over long time intervals inevitably lead to data drop-outs or degraded signals.
Beran J   +15 more
core   +2 more sources

A pixel-level entropy-weighted image fusion algorithm based on bidimensional ensemble empirical mode decomposition

open access: yesInternational Journal of Distributed Sensor Networks, 2018
The bidimensional empirical mode decomposition algorithm is more suitable to handle image fusion than the traditional multi-scale decomposition methods in the image fusion area.
Pei Wang, Hui Fu, Ke Zhang
doaj   +1 more source

Research of partial discharge detection for XLPE cable

open access: yesGong-kuang zidonghua, 2014
In order to extract characteristics of partial discharge signals, the paper proposed an adaptive threshold algorithm for processing partial discharge data by using ensemble empirical mode decomposition method for analysis of XLPE cable partial discharge ...
TANG Zhongyu   +3 more
doaj   +1 more source

Analysis of Vehicle Platform Vibration Based on Empirical Mode Decomposition

open access: yesShock and Vibration, 2021
Vehicle platform vibration (VPV) directly affects the measurement accuracy of precise measuring instrument (PMI) fixed on it. In order to reduce the influences of VPV on measurement accuracy, it is necessary to perform vibration isolation between vehicle
Chengwu Shen   +5 more
doaj   +1 more source

Adaptive Mode Decomposition Methods and Their Applications in Signal Analysis for Machinery Fault Diagnosis: A Review With Examples

open access: yesIEEE Access, 2017
Effective signal processing methods are essential for machinery fault diagnosis. Most conventional signal processing methods lack adaptability, thus being unable to well extract the embedded meaningful information.
Zhipeng Feng, Dong Zhang, Ming J. Zuo
doaj   +1 more source

Seizure detection from EEG signals using Multivariate Empirical Mode Decomposition [PDF]

open access: yes, 2017
We present a data driven approach to classify ictal (epileptic seizure) and non-ictal EEG signals using the multivariate empirical mode decomposition (MEMD) algorithm.
Ehsan, Shoaib   +4 more
core   +1 more source

Empirical mode decomposition with shape-preserving spline interpolation

open access: yesResults in Applied Mathematics, 2020
Empirical mode decomposition (EMD) is a popular, novel, user-friendly algorithm to decompose a given signal into its constituting components, utilizing spline interpolation.
Maria D. van der Walt
doaj   +1 more source

Empirical Mode Decomposition Based Multi-Modal Activity Recognition

open access: yesSensors, 2020
This paper aims to develop an activity recognition algorithm to allow parents to monitor their children at home after school. A common method used to analyze electroencephalograms is to use infinite impulse response filters to decompose the ...
Lingyue Hu   +4 more
doaj   +1 more source

WAVELET TRANSFORMS FOR EEG SIGNAL DENOISING AND DECOMPOSITION

open access: yesInternational Journal of Advances in Signal and Image Sciences, 2023
EEG signal analysis is difficult because there are so many unwanted impulses from non-cerebral sources. Presently, methods for eliminating noise through selective frequency filtering are afflicted with a notable deprivation of EEG information. Therefore,
Ibtihal Hassan Elshekhidris   +2 more
doaj   +1 more source

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