Results 41 to 50 of about 1,100,393 (352)
Photonic crystal slab Laplace operator for image differentiation
, 2018 Spatial differentiation is important in image-processing applications such as image sharpening and edge-based segmentation. In these applications, of particular importance is the Laplacian, the simplest isotropic derivative operator in two dimensions ...
Cheng Guo +4 more
semanticscholar +1 more source
Spectral properties of the Neumann-Laplace operator in quasiconformal regular domains [PDF]
Contemporary Mathematics, 2017 In this paper we study spectral properties of the Neumann-Laplace operator in planar quasiconformal regular domains $\Omega\subset\mathbb R^2$. This study is based on the quasiconformal theory of composition operators on Sobolev spaces.
V. Gol'dshtein +2 more
semanticscholar +1 more source
Eigenvalue control for a Finsler–Laplace operator [PDF]
Annals of Global Analysis and Geometry, 2012 Using the definition of a Finsler--Laplacian given by the first author, we show that two bi-Lipschitz Finsler metrics have a controlled spectrum. We deduce from that several generalizations of Riemannian results. In particular, we show that the spectrum on Finsler surfaces is controlled above by a constant depending on the topology of the surface and ...
Thomas Barthelmé +2 more
openaire +4 more sources
Some properties of the higher spin Laplace operator [PDF]
Transactions of the American Mathematical Society, 2016 The higher spin Laplace operator has been constructed recently as the generalization of the Laplacian in higher spin theory. This acts on functions taking values in arbitrary irreducible representations of the Spin group.
C. Ding, J. Ryan
semanticscholar +1 more source
Modified Edge Detector for Coloured Images
Iraqi Journal for Computers and Informatics, 2002 In this paper, a study of the role nf clour information in detecting the edges of an image was conducted Therefore, different colour spaces with components corresponding to the attribute tumance, hue, and saturation le., VHS, and LUVI were implemented ...
Ban Abdul-Rahman Al-Jubaury +2 more
doaj +1 more source
Comparative Analysis of Image Quality Values on Edge Detection Methods
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi), 2020 Identification of object boundaries in a digital image is developing rapidly in line with advances in computer technology for image processing. Edge detection becomes important because humans in recognizing the object of an image will pay attention to ...
Wicaksono Yuli Sulistyo +2 more
doaj +1 more source
Geometric characterizations of canal surfaces with Frenet center curves
AIMS Mathematics, 2021 In this work, we study the canal surfaces foliated by pseudo hyperbolic spheres $ \mathbb{H}_{0}^{2} $ along a Frenet curve in terms of their Gauss maps in Minkowski 3-space.
Jinhua Qian +3 more
doaj +1 more source
Eigenvalues of the fractional Laplace operator in the unit ball [PDF]
Journal of the London Mathematical Society, 2015 We describe a highly efficient numerical scheme for finding two‐sided bounds for the eigenvalues of the fractional Laplace operator (−Δ)α/2 in the unit ball D⊂Rd , with a Dirichlet condition in the complement of D . The standard Rayleigh–Ritz variational
Bartłomiej Dyda +2 more
semanticscholar +1 more source
Hahn Laplace transform and its applications
Demonstratio Mathematica, 2023 Like qq-calculus, Hahn calculus (or q,ωq,\omega -calculus) is constructed by defining a difference derivative operator and an integral operator. The q,ωq,\omega -analogs of the integral representations of the Laplace transform and related special ...
Hıra Fatma
doaj +1 more source
The Nehari manifold for a singular elliptic equation involving the fractional Laplace operator
, 2016 In this work we study the following singular problem involving the fractional Laplace operator: (Pλ ) { L u = a(x) uγ +λ f (x,u) in Ω; u = 0, in RN \Ω, where Ω ⊂ RN , N 2 be a bounded smooth domain, a ∈C(Ω), λ is a positive parameter and 0 < γ < 1, 2 < r
A. Ghanmi, K. Saoudi
semanticscholar +1 more source