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Optimal approximation of spherical squares by tensor product quadratic Bézier patchesVavpetič, Aleš ; Žagar, Emil, 1969-V citiranem članku je E. F. Eisele obravnaval problem optimalne aproksimacije simetričnih ploskev z bikvadratnimi Bézierjevimi krpami. V tem članku pokažemo, da so njegovi rezultati žal napačni, vsaj ... za optimalne aproksimante sferičnih kvadratov. Podana je podrobna analiza problema in numerični algoritem, ki zagotavlja konstrukcijo najboljšega aproksimanta glede na (poenostavljeno) radialno napako. Dobljeni aproksimant se razlikuje od tistega v omenjenem članku. Nadalje je celotna sfera aproksimirana z zveznim zlepkom dveh ali šestih kvadratičnih Bézierjevih krp iz tenzorskega produkta. Obstaja tudi gladka aproksimacija z zlepkom iz šestih krp, ki pa ni dobra aproksimacija sfere. Obravnavamo tudi optimalno aproksimacijo sferičnih pravokotnikov, pri čemer pokažemo, da v nekaterih primerih obstaja več optimalnih aproksimantov, kar nakazuje na težavnost problema. Na koncu so podani numerični primeri, ki potrjujejo teoretične rezultate.Source: Applied mathematics and computation. - ISSN 0096-3003 (Vol. 457, art. no. 128196, Nov. 2023, 12 str.)Type of material - article, component part ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 161773059
Author | Vavpetič, Aleš ; Žagar, Emil, 1969- |
Title | Optimal approximation of spherical squares by tensor product quadratic Bézier patches |
Publication date | 2023-11-15 |
COBISS.SI-ID | 161773059 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International |
Embargo | Immediate publication for public |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
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Topologija in njena uporaba | P1-0292-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Računalniška knjižnica za zavozlane strukture in aplikacije | J1-4031-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Nelinearni Valovi in Spektralna Teorija | N1-0137-2020 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Kompleksna in geometrijska analiza | J1-3005-2021 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
Files that belong to the publication
Link |
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https://www.sciencedirect.com/science/article/pii/S009630032300365X |
https://dirros.openscience.si/IzpisGradiva.php?id=18398 |
https://repozitorij.uni-lj.si/IzpisGradiva.php?id=152828 |
source: Applied mathematics and computation. - ISSN 0096-3003 (Vol. 457, art. no. 128196, Nov. 2023, 12 str.)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Vavpetič, Aleš | 18839 |
Žagar, Emil, 1969- | 19886 |
Source: Personal bibliographies
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