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JOURNALS // Trudy Instituta Matematiki i Mekhaniki UrO RAN // Archive

Trudy Inst. Mat. i Mekh. UrO RAN, 2016 Volume 22, Number 2, Pages 8–17 (Mi timm1285)

Discretization of a new method for localizing discontinuity lines of a noisy two-variable function

A. L. Ageevab, T. V. Antonovaa

a Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg
b Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg

Abstract: We consider the ill-posed problem of localizing (finding the position of) lines of discontinuity of a noisy function of two variables. New regularizing methods of localization are constructed in a discrete form. In these methods, the averaging kernel is varying, which simplifies the implementation of the algorithms. We obtain estimates for the localization error of the methods and for their separability threshold, which is another important characteristic.

Keywords: ill-posed problem, localization of singularities, line of discontinuity, regularization, discretization.

UDC: 517.988.68

MSC: 65J22, 68U10

Received: 15.01.2016

DOI: 10.21538/0134-4889-2016-22-2-8-17


 English version:
Proceedings of the Steklov Institute of Mathematics (Supplement Issues), 2017, 299, suppl. 1, S4–S13

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