Results 101 to 110 of about 191,604 (213)

LS2W: Implementing the Locally Stationary 2D Wavelet Process Approach in R [PDF]

open access: yes
Locally stationary process representations have recently been proposed and applied to both time series and image analysis applications. This article describes an implementation of the locally stationary two-dimensional wavelet process approach in R. This
Idris A. Eckley, Guy P. Nason
core  

Comparative Study of Image Denoising Using Wavelet Transforms and Optimal Threshold and Neighbouring Window

open access: yesمجلة كلية التربية للبنات, 2019
NeighShrink is an efficient image denoising algorithm based on the discrete wavelet transform (DWT). Its disadvantage is to use a suboptimal universal threshold and identical neighbouring window size in all wavelet subbands.
ايمان محمد جعفر علوان
doaj  

Wavelet Multiresolution Analysis of High-Frequency Asian FX Rates, Summer 1997 [PDF]

open access: yes
FX pricing processes are nonstationary and their frequency characteristics are time-dependent. Most do not conform to geometric Brownian motion, since they exhibit a scaling law with a Hurst exponent between zero and 0.5 and fractal dimensions between 1 ...
CORNELIS A. LOS, JEYANTHI KARUPPIAH
core  

ABOUT MULTISCALE MODELING WITH THE USE OF HAAR DISCRETE WAVELETS FOR TARGETED DATA EXTRACTION IN PROBLEMS OF STRUCTURAL MECHANICS

open access: yesInternational Journal for Computational Civil and Structural Engineering
The distinctive paper is devoted to multiscale modelling of functions with the use of Haar discrete wavelets. Numerical implementation is realized with the use of “Fortran” programming language (“Intel Visual Fortran” software).
Mojtaba Aslami , Pavel Akimov
doaj   +1 more source

Numerical solution of elliptic partial differential equations by Haar wavelet operational matrix method / Nor Artisham Che Ghani

open access: yes, 2012
The purpose of this study is to establish a simple numerical method based on the Haar wavelet operational matrix of integration for solving two dimensional elliptic partial differential equations of the form, Ñ2u(x, y) + ku(x, y) = f (x, y) with the ...
Nor Artisham, Che Ghani
core  

Multi-Resolution Wavelet-Transformed Image Analysis of Histological Sections of Breast Carcinomas

open access: yesCellular Oncology, 2005
Multi-resolution images of histological sections of breast cancer tissue were analyzed using texture features of Haar- and Daubechies transform wavelets.
Hae-Gil Hwang   +5 more
doaj   +1 more source

Business cycle synchronization according to wavelets – the case of Poland and the euro zone member countries [PDF]

open access: yes
In the paper time-frequency analysis in the form of the maximal overlap discrete wavelet transform (MODWT) and its complex variant – the maximal overlap discrete Hilbert wavelet transform (MODHWT) is applied to study changing patterns of business cycle ...
Joanna Bruzda
core  

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