Results 21 to 30 of about 1,497,924 (152)

Wavelet analysis of temporal data [PDF]

open access: yes, 2008
This thesis considers the application of wavelets to problems involving multiple series of temporal data. Wavelets have proven to be highly effective at extracting frequency information from data.
Goodwin, David Alexander
core   +7 more sources

Medical Image Registration Based Retrieval [PDF]

open access: yesApplied Medical Informatics, 2013
This paper presents a quantitative evaluation of state-of-the art intensity based image registration with retrieval methods applied to medical images. The purpose of this study is to access the stability of these methods for medical image analysis.
Swarnambiga AYYACHAMY   +1 more
doaj  

Optimum Design of Structures for Seismic Loading by Simulated Annealing Using Wavelet Transform [PDF]

open access: yesJournal of Soft Computing in Civil Engineering, 2018
Optimization of earthquake-affected structures is one of the most widely used methods in structural engineering. In this paper optimum design of structures for earthquake loading was achieved by simulated annealing method.
Ali Heidari, Jalil Raeisi
doaj   +1 more source

Non-parametric linear time-invariant system identification by discrete wavelet transforms

open access: yes, 2006
We describe the use of the discrete wavelet transform (DWT) for non-parametric linear time-invariant system identification. Identification is achieved by using a test excitation to the system under test (SUT) that also acts as the analyzing function for ...
Luk, RWP   +3 more
core   +2 more sources

MIMO discrete wavelet transform for the next generation wireless systems [PDF]

open access: yes, 2013
NoStudy is presented into the performance of Fast Fourier Transform (FFT) and Discrete Wavelet Transform (DWT) and MIMO-DWT with transmit beamforming. Feedback loop has been used between the equalizer at the transmitter to the receiver which provided the
Rodriguez, Jonathan   +6 more
core   +4 more sources

Classification of fetal abnormalities based on CTG signal

open access: yesمجلة بغداد للعلوم, 2014
The fetal heart rate (FHR) signal processing based on Artificial Neural Networks (ANN),Fuzzy Logic (FL) and frequency domain Discrete Wavelet Transform(DWT) were analysis in order to perform automatic analysis using personal computers.
Baghdad Science Journal
doaj   +1 more source

Sparse Signal Reconstruction on Fixed and Adaptive Supervised Dictionary Learning for Transient Stability Assessment

open access: yesEnergies, 2021
Fixed and adaptive supervised dictionary learning (SDL) is proposed in this paper for wide-area stability assessment. Single and hybrid fixed structures are developed based on impulse dictionary (ID), discrete Haar transform (DHT), discrete cosine ...
Raoult Teukam Dabou   +3 more
doaj   +1 more source

Parallel Implementation of Wavelet-based Image Denoising on Programmable PC-grade Graphics Hardware [PDF]

open access: yes, 2010
The Discrete Wavelet Transform (DWT) has been extensively used for image compression and denoising in the areas of image processing and computer vision. However, the intensive computation of DWT due to its multilevel data decomposition and reconstruction
Xu, Zhijie, Su, Yang
core   +1 more source

Image Compression Using 3-D Two-Level Technique

open access: yesJournal of Engineering, 2023
In this paper three techniques for image compression are implemented. The proposed techniques consist of three dimension (3-D) two level discrete wavelet transform (DWT), 3-D two level discrete multi-wavelet transform (DMWT) and 3-D two level hybrid ...
Zainab Ibraheem Abood
doaj   +1 more source

CHARACTERIZATION OF BREAST TISSUES IN COMBINED TRANSFORMS DOMAIN USING SUPPORT VECTOR MACHINES [PDF]

open access: yesICTACT Journal on Image and Video Processing, 2011
Mammography is a well established imaging technique for showing tissue abnormalities of breast and has been proven to reduce death rate due to breast cancer in screened populations of women.
B.N. Prathibha, V. Sadasivam
doaj  

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