نتایج جستجو برای: integral convolution

تعداد نتایج: 130381  

2001
Rein van den Boomgaard Rik van der Weij

Gaussian convolutions are perhaps the most often used image operators in low-level computer vision tasks. Surprisingly though, there are precious few articles that describe efficient and accurate implementations of these operators. In this paper we describe numerical approximations of Gaussian convolutions based on interpolation. We start with the continuous convolution integral and use an inte...

2008
P. M. van den Berg A. Abubakar T. M. Habashy

This paper is concerned with the source-type of integral equation to compute the electromagnetic scattering by an inhomogeneous 3D object in a planar layered medium in the frequency domain. By decomposing the scattered field into a particular and a general constituent, the structure of the integral operator of the integral equation is constructed. The particular constituent represents the scatt...

Journal: :Int. J. Math. Mathematical Sciences 2004
Bongjin Kim Byoung Soo Kim David L. Skoug

We establish the various relationships that exist among the integral transform Ᏺ α,β F , the convolution product (F * G) α , and the first variation δF for a class of functionals defined on K[0,T ], the space of complex-valued continuous functions on [0,T ] which vanish at zero. 1. Introduction and definitions. In a unifying paper [10], Lee defined an integral transform Ᏺ α,β of analytic functi...

Journal: :Proceedings of the American Mathematical Society 1956

Journal: :Journal of Computational and Applied Mathematics 1994

Journal: :Journal of Mathematical Analysis and Applications 1999

Journal: :International Journal of Mathematics and Mathematical Sciences 2002

Journal: :Journal of Computational and Applied Mathematics 1992

1997
Christian Teitzel Roberto Grosso Thomas Ertl

Line Integral Convolution (LIC), introduced by Cabral and Leedom in 1993, is a powerful technique for generating striking images of vector data. Based on local ltering of an input texture along a curved stream line segment in a vector eld, it is possible to depict directional information of the vector eld at pixel resolution. The methods suggested so far can handle structured grids only. Now we...

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