نتایج جستجو برای: wavelet enhanced ica

تعداد نتایج: 391800  

Journal: :Circulation 1999
T Nakajima K Iwasawa H Oonuma H Imuta H Hazama M Asano T Morita F Nakamura J Suzuki S Suzuki Y Kawakami M Omata Y Okuda

BACKGROUND It has been suggested that intracellular Ca2+ overload in cardiac myocytes leads to the development of diabetic cardiomyopathy. Troglitazone, an insulin-sensitizing agent, is a promising therapeutic agent for diabetes and has been shown to prevent diabetes-induced myocardial changes. To elucidate the underlying mechanism of troglitazone action on cardiac myocytes, the effects of trog...

2017
Smriti Bhatnagar

Mammographic images are used for detection of breast cancer in women. In this paper denoising algorithms for mammographic images in wavelet domain are considered. A modified approach for denoising of mammographic images using Diversity Enhanced Wavelet Transform has been proposed. Diversity of the Wavelet Transform is enhanced by taking different mother wavelets and different number of levels t...

A Mostaar M Ashtiyani, S Navaei Lavasani

Background: Dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) provides functional information on the microcirculation in tissues by analyzing the enhancement kinetics which can be used as biomarkers for prostate lesions detection and characterization.Objective: The purpose of this study is to investigate spatiotemporal patterns of tumors by extracting semi-quantitative as well as w...

Journal: :Image Vision Comput. 2005
Connie Tee Andrew Beng Jin Teoh Michael Goh Kah Ong David Chek Ling Ngo

Recently, biometric palmprint has received wide attention from researchers. It is well-known for several advantages such as stable line features, low-resolution imaging, low-cost capturing device, and user-friendly. In this paper, an automated scanner-based palmprint recognition system is proposed. The system automatically captures and aligns the palmprint images for further processing. Several...

2017
Prince Kumar Saini Maitreyee Dutta

In this work, we have documented and compare various feature extraction methods for classification using EEG signal. This paper contains a comparative study of data reduction methods which enhances the classification accuracy. Deep study of decomposition of signals into the frequency sub bands by wavelet method (DWT) and a set of statistical features that were extracted from the EEG signals to ...

Journal: :Nagoya journal of medical science 1995
M Kito M Maehara K Watanabe

The voltage-dependent calcium current (ICa) in cultured human neuroblastoma cells (NB-I) was studied by whole-cell recording. The low-threshold current (Il), the high-threshold, fast inactivating current (Ih.f.), and the high-threshold, slow inactivating current (Ih.s.) were identified. Il. was blocked by Ni2+. Ih.f. was blocked by omega-conotoxin GVIA. Ih.s. was blocked by nifedipine, and enha...

2013
B. S. Abdur Rahman

The objective of this study is to combine multiple images of a scene acquired by different sensors to create a new image with all important information from the input images. Recent studies show that bases trained using Independent Component Analysis (ICA) is effective in multisensor fusion and has improved performance over traditional wavelet approaches. In the ICA based fusion, the coefficien...

Journal: :journal of biomedical physics and engineering 0
m ghofrani jahromi h parsaei a zamani m dehbozorgi

background: electromyographic (emg) signal decomposition is the process by which an emg signal is decomposed into its constituent motor unit potential trains (mupts). a major step in emg decomposition is feature extraction in which each detected motor unit potential (mup) is represented by a feature vector. as with any other pattern recognition system, feature extraction has a significant impac...

Journal: :iranian journal of medical physics 0
a. boroomand m.sc. in biomedical engineering, tehran university of medical sciences, tehran, iran a. ahmadian associate professor, physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran research center for science & technology in medicine, imam khomeini hospital, tehran, iran m.a. oghabian associate professor, physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran

introduction: the accuracy of analyzing functional mri (fmri) data is usually decreases in the presence of noise and artifact sources. a common solution in for analyzing fmri data having high noise is to use suitable preprocessing methods with the aim of data denoising. some effects of preprocessing methods on the parametric methods such as general linear model (glm) have previously been evalua...

A Zamani, H Parsaei, M Dehbozorgi M Ghofrani Jahromi

Background: Electromyographic (EMG) signal decomposition is the process by which an EMG signal is decomposed into its constituent motor unit potential trains (MUPTs). A major step in EMG decomposition is feature extraction in which each detected motor unit potential (MUP) is represented by a feature vector. As with any other pattern recognition system, feature extraction has a significant impac...

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