Results 21 to 30 of about 1,356,190 (187)

iCap: New method for noise reduction in electroencephalography (EEG) signals

open access: yesمجلة جامعة دمشق للعلوم الهندسية, 2022
Electroencephalographic (EEG) signal’s importance increases as the neurotechnology research and industry accelerate. Therefore, it is crucial to acquire noise-free signals by maximising the signal-to-noise ratio (SNR). Many methods are followed to clean
Nibras ABO ALZAHAB Riham DAIEA Mhd Shafik ALNAHHAS
doaj  

Signal to Noise Ratio of a Coded Slit Hyperspectral Sensor

open access: yesSignals, 2022
In recent years, a wide range of hyperspectral imaging systems using coded apertures have been proposed. Many implement compressive sensing to achieve faster acquisition of a hyperspectral data cube, but it is also potentially beneficial to use coded ...
Jonathan Piper   +2 more
doaj   +1 more source

Breathing-induced Errors in Quantification and Description of Dominant Intra-Prostatic Lesions (Dils) in PET Images: A Simulation Study by Means of The 4D NCAT Phantom [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2022
Background: Respiratory movement and the motion range of the diaphragm can affect the quality and quantity of prostate images.Objective: This study aimed to investigate the magnitude of respiratory-induced errors to determine Dominant Intra- prostatic ...
Khadijeh Bamneshin   +5 more
doaj   +1 more source

Classification and redshift estimation by principal component analysis [PDF]

open access: yes, 2002
We show that the first 10 eigencomponents of the Karhunen-Lo\`eve expansion or Principal Component Analysis (PCA) provide a robust classification scheme for the identification of stars, galaxies and quasi-stellar objects from multi-band photometry.
Bagoly   +57 more
core   +2 more sources

Remote Sensing Low Signal-to-Noise-Ratio Target Detection Enhancement

open access: yesSensors, 2023
In real-time remote sensing application, frames of data are continuously flowing into the processing system. The capability of detecting objects of interest and tracking them as they move is crucial to many critical surveillance and monitoring missions ...
Tian J. Ma, Robert J. Anderson
doaj   +1 more source

Noise Folding in Compressed Sensing [PDF]

open access: yes, 2011
The literature on compressed sensing has focused almost entirely on settings where the signal is noiseless and the measurements are contaminated by noise. In practice, however, the signal itself is often subject to random noise prior to measurement.
Ery Arias-castro   +2 more
core   +2 more sources

A study on correlation between thyroid CT radiation dose, image quality and female body composition [PDF]

open access: yesZhongguo aizheng zazhi
Background and purpose: With the increasing use of medical imaging examinations, Computed tomography (CT) scans have become one of the primary sources of effective dose.
SHEN Xigang, LIN Chengxiang, PENG Weijun, GU Yajia
doaj   +1 more source

Signal-to-noise ratio and signal-to-noise efficiency in SMASH imaging [PDF]

open access: yesMagnetic Resonance in Medicine, 1999
A general theory of signal-to-noise ratio (SNR) in simultaneous acquisition of spatial harmonics (SMASH) imaging is presented, and the predictions of the theory are verified in imaging experiments and in numerical simulations. In a SMASH image, multiple lines of k-space are generated simultaneously through combinations of magnetic resonance signals in ...
D K, Sodickson   +4 more
openaire   +2 more sources

Sequential joint signal detection and signal-to-noise ratio estimation

open access: yes, 2017
The sequential analysis of the problem of joint signal detection and signal-to-noise ratio (SNR) estimation for a linear Gaussian observation model is considered.
Fauß, M.   +3 more
core   +1 more source

Design of Piecewise Uniform Scalar Quantizer with Geometric Progression of Segment Width

open access: yesAdvances in Electrical and Computer Engineering, 2011
In this paper, the design procedure of the piecewise uniform scalar quantizer having segments with widths that form a geometric progression is presented.
NIKOLIC, J., PERIC, Z.
doaj   +1 more source

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