Results 11 to 20 of about 4,058 (185)

Wavelets Defined Over Non Nested Tetrahedral Grids: A Theoretical Approach

open access: yesJournal of Computer Science and Technology, 2019
The main contribution of this paper is the definition of wavelets over non nested tetrahedral grids, allowing the representation of functions defined on an a irregular tetrahedralization. In this way, it is possible to represent different attributes of a
Liliana B. Boscardin   +2 more
doaj   +1 more source

Application of multi-dimensional wavelet transform to fluid mechanics

open access: yesTheoretical and Applied Mechanics Letters, 2020
: This paper first reviews the application research works of wavelet transform on the fluid mechanics. Then the theories of continuous wavelet transform and multi-dimensional orthogonal (discrete) wavelet transform, including wavelet multiresolution ...
Akira Rinoshika, Hiroka Rinoshika
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

Construction of Orthonormal Piecewise Polynomial Scaling and Wavelet Bases on Non-Equally Spaced Knots

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper investigates the mathematical framework of multiresolution analysis based on irregularly spaced knots sequence. Our presentation is based on the construction of nested nonuniform spline multiresolution spaces.
Zergaïnoh Anissa   +2 more
doaj   +2 more sources

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

Multiresolution Analysis Adapted to Irregularly Spaced Data

open access: yesEURASIP Journal on Advances in Signal Processing, 2009
This paper investigates the mathematical background of multiresolution analysis in the specific context where the signal is represented by irregularly sampled data at known locations.
Anissa Mokraoui, Pierre Duhamel
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

Multiresolution analysis for irregular meshes [PDF]

open access: yesSPIE Proceedings, 2004
The concept of multiresolution analysis applied to irregular meshes has become more and more important. Previous contributions proposed a variety of methods using simplification and/or subdivision algorithms to build a mesh pyramid. In this paper, we propose a multiresolution analysis framework for irregular meshes with attributes.
Michael, Roy   +4 more
openaire   +2 more sources

Multiresolution analysis applied to interpretation of seismic reflection data [PDF]

open access: yesGeofísica Internacional, 2005
We have developed a method of seismic multiresolution analysis based on the discrete wavelet transform. We illustrate the potential use in petroleum exploration of the joint application of multiresolution analysis and seismic attributes for a real case ...
J. O. Campos-Enríquez   +3 more
doaj  

Multiresolution Analysis of EEG Signals

open access: yesStudies in Logic, Grammar and Rhetoric, 2016
This paper reports on a multiresolution analysis of EEG signals. The dominant frequency components of signals with and without observed epileptic discharges were compared.
Borowska Marta, Białobłocka Natalia
doaj   +1 more source

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