Results 41 to 50 of about 48,101,502 (271)

Wavelet geographically weighted regression for spectroscopic modelling of soil properties

open access: yesScientific Reports, 2021
Soil properties, such as organic carbon, pH and clay content, are critical indicators of ecosystem function. Visible–near infrared (vis–NIR) reflectance spectroscopy has been widely used to cost-efficiently estimate such soil properties.
Yongze Song   +3 more
doaj   +1 more source

APPLICABILITY OF MULTI-SEASONAL X-BAND SAR IMAGERY FOR MULTIRESOLUTION SEGMENTATION: A CASE STUDY IN A RIPARIAN MIXED FOREST [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The increasing availability of synthetic aperture radar (SAR) data from a range of different sensors necessitates efficient methods for semi-automated information extraction at multiple spatial scales for different fields of application. The focus of the
Z. Dabiri   +3 more
doaj   +1 more source

Intertwining wavelets or Multiresolution analysis on graphs through random forests [PDF]

open access: yesApplied and Computational Harmonic Analysis, 2017
We propose a new method for performing multiscale analysis of functions defined on the vertices of a finite connected weighted graph. Our approach relies on a random spanning forest to downsample the set of vertices, and on approximate solutions of ...
L. Avena   +3 more
semanticscholar   +1 more source

Local appearance-based face recognition using adaptive directional wavelet transform

open access: yesJournal of King Saud University: Computer and Information Sciences, 2019
The latest research has shown that adaptive directional wavelet transform can constitute edges and textures in images efficiently due to the adaptive directional selectivity.
Mohd. Abdul Muqeet, Raghunath S. Holambe
doaj   +1 more source

Quadratic Phase Multiresolution Analysis and the Construction of Orthonormal Wavelets in L2(ℝ)

open access: yesAxioms, 2023
The multi-resolution analysis (MRA) associated with quadratic phase Fourier transform (QPFT) serves as a tool to construct orthogonal bases of the L2(R). Consequently, it assumes a pivotal role in facilitating potential applications of QPFT.
Bivek Gupta   +3 more
doaj   +1 more source

Fault analysis using Gegenbauer multiresolution analysis [PDF]

open access: yes2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America (IEEE Cat. No. 04EX956), 2005
This paper exploits the multiresolution analysis in the fault analysis on transmission lines. Faults were simulated using the ATP (Alternative Transient Program), considering signals at 128/cycle. A nonorthogonal multiresolution analysis was provided by Gegenbauer scaling and wavelet filters. In the cases where the signal reconstruction is not required,
Luciana R. Soares, Hélio M. de Oliveira
openaire   +3 more sources

Error bounds of a function related to generalized Lipschitz class via the pseudo-Chebyshev wavelet and its applications in the approximation of functions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2022
In this paper, a new computation method derived to solve the problems of approximation theory. This method is based upon pseudo-Chebyshev wavelet approximations. The pseudo-Chebyshev wavelet is being presented for the first time.
S. Lal   +3 more
doaj   +1 more source

Wavelets biortogonais

open access: yesRevista Brasileira de Ensino de Física
A transformada wavelet biortogonal e as bases wavelet são uma poderosa ferramenta para análise de dados multiescala, que tem vastas aplicações na física, matemática, computação e tecnologias.
Margarete Oliveira Domingues   +1 more
doaj   +1 more source

GPU-parallelisation of Haar wavelet-based grid resolution adaptation for fast finite volume modelling: application to shallow water flows

open access: yesJournal of Hydroinformatics, 2023
Wavelet-based grid resolution adaptation driven by the ‘multiresolution analysis’ (MRA) of the Haar wavelet (HW) allows to devise an adaptive first-order finite volume (FV1) model (HWFV1) that can readily preserve the modelling fidelity of its reference ...
Alovya Ahmed Chowdhury   +3 more
doaj   +1 more source

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