In order to handle directional singularities, standard wavelet approaches have been extended to the concept of discrete shearlets in [9]. One disadvantage of this extension, however, is the relatively large determinant of the scaling matrices used there which results in a substantial data complexity. This motivates the question whether some of the features of the discrete shearlets can also be obtained by meansof different geometries.In this paper, we give a positive answer by presenting a different approach, based on a matrix with small determinant which therefore offers a larger recursion depth for thesame amount of data.
An anisotropic directional multiresolution and subdivision scheme / Cotronei, Mariantonia; Ghisi, D; Rossini, M; Sauer, T. - In: ADVANCES IN COMPUTATIONAL MATHEMATICS. - ISSN 1019-7168. - 41:3(2015), pp. 709-726. [10.1007/s10444-014-9384-x]
An anisotropic directional multiresolution and subdivision scheme
COTRONEI, Mariantonia
;
2015-01-01
Abstract
In order to handle directional singularities, standard wavelet approaches have been extended to the concept of discrete shearlets in [9]. One disadvantage of this extension, however, is the relatively large determinant of the scaling matrices used there which results in a substantial data complexity. This motivates the question whether some of the features of the discrete shearlets can also be obtained by meansof different geometries.In this paper, we give a positive answer by presenting a different approach, based on a matrix with small determinant which therefore offers a larger recursion depth for thesame amount of data.File | Dimensione | Formato | |
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