A sombrero function (sometimes called besinc function or jinc function[1]) is the 2-dimensional polar coordinate analog of the sinc function, and is so-called because it is shaped like a sombrero hat. This function is frequently used in image processing.[2] It can be defined through the Bessel function of the first kind () where ρ2 = x2 + y2.
The normalization factor 2 makes somb(0) = 1. Sometimes the π factor is omitted, giving the following alternative definition:
The factor of 2 is also often omitted, giving yet another definition and causing the function maximum to be 0.5:[3]
The Fourier transform of the 2D circle function () is a sombrero function. Thus a sombrero function also appears in the intensity profile of far-field diffraction through a circular aperture, known as an Airy disk.
^Cite error: The named reference Blahut was invoked but never defined (see the help page).
^Cite error: The named reference Hendee was invoked but never defined (see the help page).
^Cite error: The named reference Wolfram was invoked but never defined (see the help page).
A sombrerofunction (sometimes called besinc function or jinc function) is the 2-dimensional polar coordinate analog of the sinc function, and is so-called...
The Sombrero Galaxy (also known as Messier Object 104, M104 or NGC 4594) is a peculiar galaxy of unclear classification in the constellation borders of...
the Higgs mechanism The Mexican hat wavelet, a continuous wavelet functionSombrero (disambiguation) This disambiguation page lists articles associated...
all built-in functions in KAlgebra. Functions can be looked up with parameters, examples, formulas and sample plots. Over 100 functions and operations...
the Mexican hat wavelet in the Americas, due to taking the shape of a sombrero when used as a 2D image processing kernel. It is also known as the Marr...
Sailor hat Šajkača Salakot Cappello romano Skullcap, also zucchetto Snood Sombrero Songkok Sports visor Straw hat Student cap Tam, or tam o' shanter Taqiya...
with a hole in the middle for the head. It covers the torso. Straw hat (sombrero aguadeño) Tapapinche: Leather apron. The fictional Juan Valdez, brand representative...
company. Projector (patent) Erlanger v New Sombrero Phosphate Co (1878) 3 App Cas 1218 e.g. Erlanger v New Sombrero Phosphate Co (1878) 3 App Cas 1218 Wiktionary:projector...
decorative design attached to a band or clip. In contrast to a hat, its function is purely ornamental: it covers very little of the head and offers little...
components that form a complex doublet of the weak isospin SU(2) symmetry. Its "Sombrero potential" leads it to take a nonzero value everywhere (including otherwise...
that NGC 1316 may be a galaxy in evolution that eventually will become a Sombrero-like system dominated by a large bulge. Accuracy of such destinations and...
New Mexico. Another design, derived from the pointed top of the Mexican sombrero, worked its way north and became known as the "Montana peak", which had...
Simon Hurt Joker Le Bossu Pierrot Lunaire King Kraken Charlie Caligula El Sombrero Jezebel Jet Scorpiana Swagman Council of Spiders Christopher Yost Marcus...
Manchu men's clothing elements in one of their Hanfu changshan.: 129 In function, the changshan is considered the male equivalent of the women's cheongsam...
gotten a "golden sombrero". Three strike outs is called the "hat trick", while the rare five strike outs is called the "platinum sombrero." Only eight times...
An umbrella hat is an umbrella canopy attached to a headband that functions as a protection against the drizzle rain or sun. It is seen as a novelty item...
very desirable wheel covers were those of the 1950 Cadillac (called the "Sombrero") and that of the 1953 to 1955 Oldsmobile, which resembled a huge, three-tined...
in the vicinity of ours, only surpassed by the Andromeda Galaxy and the Sombrero Galaxy) and the companion galaxies NGC 247, PGC 2881, PGC 2933, Sculptor-dE1...
NGC 3377, NGC 4258, NGC 4889, NGC 1277, OJ 287, APM 08279+5255 and the Sombrero Galaxy. It is now widely accepted that the centre of nearly every galaxy...
An Asian country and former member of the Soviet Union featured in San Sombrèro: A Land of Carnivals, Cocktails and Coups. Turmezistan: An Asian country...
of a sari or dupatta (a long scarf) is pulled over the head or face to function as a ghoonghat. Garcia, Myrian (15 March 2022). "How India's Religious...
to record and whose production was made almost entirely in La Casa del Sombrero, Eduardo's production label. The record was produced by his own record...
Global Information
