نتایج جستجو برای: multi resolution analysis mra
تعداد نتایج: 3385738 فیلتر نتایج به سال:
A method for polarimetric Synthetic Aperture Radar: SAR image classification with high frequency component derived from wavelet Multi-Resolution Analysis: MRA is proposed. Although it is well known that polarization signature derived from fully polarized SAR data is useful for SAR image classifications, it is still unknown how to utilize the polarization signature in the image classification. H...
This paper presents an improved algorithm for fault detection and classification of transmission line fault current signals using MATLAB/SIMULINK. The proposed algorithm presents a fault discrimination method based on the three-phase current and voltage waveforms measured when fault events occur in the power transmission-line network. The algorithm for fault classification employs wavelet multi...
This paper compares the performance of an operational Automatic Speech Recognition system when MFCCs, JRASTA Perceptual Linear Prediction Coefficients (J-Rasta PLP) and energies from a Multi Resolution Analysis (MRA) tree of filters are used as input features to a hybrid system consisting of a Neural Network (NN) which provides observation probabilities for a network of Hidden Markov Models (HM...
A wavelet-based image-encoding is described which, when used in conjunction with the Diierence Engine (a custom-designed VLSI display processor) allows us to reconstruct an image in real-time without the need to set each pixel explicitly. The image is compressed using a quadratic spline-wavelet transform; when reconstructing, an image-adaptive instruction generator attempts to produce the minim...
We discuss a procedure to construct multi-resolution analyses (MRA) of L2(R) starting from a given seed function h(s) which should satisfy some conditions. Our method, originally related to the quantum mechanical hamiltonian of the fractional quantum Hall effect (FQHE), is shown to be model independent. The role of a canonical map between certain canonically conjugate operators is discussed. Th...
In heterogeneous networks, multi-radio access technologies (RATs) can coexist for a variety of traffic demands and it is called multi-RAT network. Also, cognitive radio enable to use white space of frequency band, and thus spectrum resources can be dynamically allocated. This paper analyzes an effect of multi-radio access (MRA) users, who simultaneously exploit multi-RATs, on network performanc...
T. A. Cashen, J. C. Carr, M. T. Walker, J. K. Hopkins, W. Shin, T. J. Carroll Biomedical Engineering, Northwestern University, Chicago, IL, United States, Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States Introduction Multi-phase angiography is necessary for the diagnosis of vascular disorders involving arteriovenous shunting, retrograde flow, and collat...
Introduction: The term Subclavian steal refers to reversal of normal direction of flow in the vertebral artery ipsilateral to severe stenosis/occlusion occurring between aortic arch and vertebral artery origin. The diagnosis of subclavian steal syndrome can be suggested by many techniques which include invasive angiography, noninvasive continuous wave Doppler ultrasonography of neck, multi-slic...
as the information carried in a high spatial resolution image is not represented by single pixels but by meaningful image objects, which include the association of multiple pixels and their mutual relations, the object based method has become one of the most commonly used strategies for the processing of high resolution imagery. this processing comprises two fundamental and critical steps towar...
Synthetic Aperture Radar (SAR) images are inherently affected by a multiplicative noise-like phenomenon called speckle, which is indeed the nature of all coherent systems. Speckle decreases the performance of almost all the information extraction methods such as classification, segmentation, and change detection, therefore speckle must be suppressed. Despeckling can be applied by the multilooki...
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