Lagrange–Chebyshev Interpolation for image resizing

D Occorsio, G Ramella, W Themistoclakis - Mathematics and Computers in …, 2022 - Elsevier
Image resizing is a basic tool in image processing, and in literature, we have many methods
based on different approaches, which are often specialized in only upscaling or …

Image scaling by de la vallée-poussin filtered interpolation

D Occorsio, G Ramella, W Themistoclakis - Journal of Mathematical …, 2023 - Springer
We present a new image scaling method both for downscaling and upscaling, running with
any scale factor or desired size. The resized image is achieved by sampling a bivariate …

[HTML][HTML] De la Vallée Poussin filtered polynomial approximation on the half–line

D Occorsio, W Themistoclakis - Applied Numerical Mathematics, 2025 - Elsevier
On the half line, we introduce a new sequence of near-best uniform approximation
polynomials, easily computable by the values of the approximated function at a truncated …

Filtered interpolation for solving Prandtl's integro-differential equations

MC De Bonis, D Occorsio, W Themistoclakis - Numerical Algorithms, 2021 - Springer
In order to solve Prandtl-type equations we propose a collocation-quadrature method based
on de la Vallée Poussin (briefly VP) filtered interpolation at Chebyshev nodes. Uniform …

On the filtered polynomial interpolation at Chebyshev nodes

D Occorsio, W Themistoclakis - Applied Numerical Mathematics, 2021 - Elsevier
The paper deals with a special filtered approximation method, which originates interpolation
polynomials at Chebyshev zeros by using de la Vallée Poussin filters. In order to get an …

[HTML][HTML] On solving some Cauchy singular integral equations by de la Vallée Poussin filtered approximation

D Occorsio, MG Russo, W Themistoclakis - Applied Numerical Mathematics, 2024 - Elsevier
The paper deals with the numerical solution of Cauchy Singular Integral Equations based on
some non standard polynomial quasi–projection of de la Vallée Poussin type. Such kind of …

Filtered integration rules for finite weighted Hilbert transforms

D Occorsio, MG Russo, W Themistoclakis - Journal of Computational and …, 2022 - Elsevier
A product quadrature rule, based on the filtered de la Vallée Poussin polynomial
approximation, is proposed for evaluating the finite weighted Hilbert transform in [− 1, 1] …

Noise reduction through thresholding process over the space of orthogonal polynomials

P Saini, LK Balyan, A Kumar, GK Singh - Proceedings of Second …, 2023 - Springer
Generally, noise contamination occurs during the acquisition, transmission, and storage
processes. Due to these noisy components, the approximated data suffer from the dynamic …

Filtered integration rules for finite Hilbert transforms

D Occorsio, MG Russo, W Themistoclakis - arXiv preprint arXiv …, 2021 - arxiv.org
A product quadrature rule, based on the filtered de la Vall\'ee Poussin polynomial
approximation, is proposed for evaluating the finite Hilbert transform in [-1; 1]. Convergence …

KEBIJAKAN SEKOLAH ADIWIYATA SEBAGAI PENERAPAN PENDIDIKAN KARAKTER DI SMP TELKOMUNIKASI PEKANBARU

R Nasrianti, W Saputra, Z Zalisman… - Jurnal …, 2023 - ejurnal.stkip-pessel.ac.id
Lunturnya nilai-nilai karakter di kalangan pelajar saat ini menjadikan sebuah hal yang
memprihatinkan oleh generasi dimasa akan datang di lingkungan sekolah seperti …