Results 1 to 10 of about 1,711 (105)

On Multistage Successive Refinement for Wyner-Ziv Source Coding with Degraded Side Informations [PDF]

open access: yes, 2006
We provide a complete characterization of the rate-distortion region for the multistage successive refinement of the Wyner-Ziv source coding problem with degraded side informations at the decoder.
Diggavi, Suhas, Tian, Chao
core   +5 more sources

Multivariate quasi-tight framelets with high balancing orders derived from any compactly supported refinable vector functions [PDF]

open access: yesScience China Mathematics, 2021
Generalizing wavelets by adding desired redundancy and flexibility,framelets are of interest and importance in many applications such as image processing and numerical algorithms. Several key properties of framelets are high vanishing moments for sparse multiscale representation, fast framelet transforms for numerical efficiency, and redundancy for ...
Han, Bin, Lu, Ran
openaire   +3 more sources

Generalized interpolating refinable function vectors

open access: yesJournal of Computational and Applied Mathematics, 2009
Compactly supported interpolating \(d\)-refinable function vectors with any dilation factor \(d>1\) are considered. Motivated by wavelet applications, it is desirable to have compactly supported refinable functions that are both interpolating and orthogonal.
Han, Bin   +2 more
openaire   +1 more source

Regularity of refinable function vectors

open access: yesThe Journal of Fourier Analysis and Applications, 1997
Compactly supported solutions of refinement equations \(\phi(x)=\sum_{n=0}^N P_n\phi(2x-n)\) are considered for vector valued functions \(\phi\) and constant square matrices \(P_n\). As in the scalar case, the smoothness of \(\phi\) and the decay of the Fourier transform \(\widehat{\phi}\) are characterized by properties of the refinement mask \(P(u ...
Cohen, A., Daubechies, I., Plonka, G.
openaire   +3 more sources

High Balanced Biorthogonal Multiwavelets with Symmetry

open access: yesAbstract and Applied Analysis, 2014
Balanced multiwavelet transform can process the vector-valued data sparsely while preserving a polynomial signal. Yang et al. (2006) constructed balanced multiwavelets from the existing nonbalanced ones.
Youfa Li   +3 more
doaj   +1 more source

Eilenberg Theorems for Free [PDF]

open access: yes, 2017
Eilenberg-type correspondences, relating varieties of languages (e.g. of finite words, infinite words, or trees) to pseudovarieties of finite algebras, form the backbone of algebraic language theory.
Adámek, Jiří   +3 more
core   +2 more sources

Properties of locally linearly independent refinable function vectors [PDF]

open access: yesJournal of Approximation Theory, 2003
Let \(\Phi= (\phi_1,\dots,\phi_r)^T\) be a vector of compactly supported integrable functions on \(\mathbb{R}\) such that \[ \Phi(t)= \sum_{k\in\mathbb{Z}} A(k)\Phi(2t- k)\quad\text{for all }t\in \mathbb{R}, \] where \(\{A(k)\}\) is a finitely supported sequence of \((r\times r)\)-matrices.
Plonka, Gerlind, Zhou, Ding-Xuan
openaire   +4 more sources

Bell-shaped nonstationary refinable ripplets [PDF]

open access: yes, 2015
We study the approximation properties of the class of nonstationary refinable ripplets introduced in \cite{GP08}. These functions are solution of an infinite set of nonstationary refinable equations and are defined through sequences of scaling masks that
Pitolli, Francesca
core   +2 more sources

Orthogonality criteria for compactly supported refinable functions and refinable function vectors

open access: yesThe Journal of Fourier Analysis and Applications, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lagarias, Jeffrey C., Wang, Yang
openaire   +2 more sources

A multiscale collocation method for fractional differential problems [PDF]

open access: yes, 2018
We introduce a multiscale collocation method to numerically solve differential problems involving both ordinary and fractional derivatives of high order.
Pezza, L., Pitolli, F.
core   +1 more source

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