Results 21 to 30 of about 20,661 (163)

Quadratic trigonometric B-spline for image interpolation using GA. [PDF]

open access: yesPLoS ONE, 2017
In this article, a new quadratic trigonometric B-spline with control parameters is constructed to address the problems related to two dimensional digital image interpolation.
Malik Zawwar Hussain   +2 more
doaj   +1 more source

ON INTERPOLATION BY ALMOST TRIGONOMETRIC SPLINES [PDF]

open access: yesUral mathematical journal, 2017
Summary: The existence and uniqueness of an interpolating periodic spline defined on an equidistant mesh by the linear differential operator \(\mathcal{L}_{2n+2}(D)=D^2(D^2+1^2)(D^2+2^2)\cdots (D^2+n^2)\) with \(n\in\mathbb{N}\) are reproved under the final restriction on the step of the mesh. Under the same restriction, sharp estimates of the error of
openaire   +3 more sources

Empirical mode decomposition with shape-preserving spline interpolation

open access: yesResults in Applied Mathematics, 2020
Empirical mode decomposition (EMD) is a popular, novel, user-friendly algorithm to decompose a given signal into its constituting components, utilizing spline interpolation.
Maria D. van der Walt
doaj   +1 more source

Comparative evaluation of interpolation methods for the directivity of musical instruments

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2021
Measurements of the directivity of acoustic sound sources must be interpolated in almost all cases, either for spatial upsampling to higher resolution representations of the data, for spatial resampling to another sampling grid, or for use in simulations
David Ackermann   +4 more
doaj   +1 more source

Kernel B-splines and interpolation

open access: yesNumerical Algorithms, 2006
Kernel B-splines comprise a more general approach to radial basis function interpolation, in that the more specific radial basis functions are replaced by positive definite kernels or conditionally positive kernels. In this paper, differences are applied to the conditionally positive definite kernels in order that they decay (more quickly) and that the
Bozzini M, Lenarduzzi L, Schaback R
openaire   +5 more sources

Applaying Types of Interpolation Methods for Spatial Analysis and Monitoring of SPI Drought Case study: Khorasan Razavi Province Mohsen Hamidiyanpour Ph.D Student of Natural Geography University of Tarbiyate Moallem Tehran Dr. Mohammad Saligeh Assistant Profesor of Natural Geography University of Tarbiyate Moallem Tehran Gholamabas Falah Ghlhari Ph.D Student of Natural Geography University of Isfahan [PDF]

open access: yesجغرافیا و توسعه, 2014
Drought is the most complicated natural hazards. This phenomenon has different characteristics which are calculated by different indices, where as these indices are depondant on climatic variables and meteorological stations, therefore their ability for ...
doaj   +1 more source

Quartic spline-on-spline interpolation

open access: yesJournal of Computational and Applied Mathematics, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xieping-Gao, , Shi-Shu, , Kaixin-Fu,
openaire   +1 more source

Quadratic spline interpolation with coinciding interpolation and spline grids

open access: yesJournal of Computational and Applied Mathematics, 1982
The authors consider the problem of quadratic spline interpolation of continuous functions in the case when the spline grid and the interpolation grid coincide. The main purpose of the paper is to deduce error estimations for the quadratic spline function s interpolating a given function f on a grid with width h.
Mettke, Holger   +2 more
openaire   +2 more sources

B-splines and kernels of trigonometric interpolation splines

open access: yesCoRR, 2023
This article focuses on trigonometric Riemann B-splines and Riemann kernels of trigonometric interpolation splines of arbitrary order; it is shown that trigonometric interpolation splines are a convolution of trigonometric B-splines with corresponding kernels.
Volodymyr Denysiuk, Olena Hryshko
openaire   +2 more sources

Interpolation of natural cubic spline

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
From the result in [1] it follows that there is a unique quadratic spline which bounds the same area as that of the function. The matching of the area for the cubic spline does not follow from the corresponding result proved in [2].
Arun Kumar, L. K. Govil
doaj   +1 more source

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