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From Local Cosine Bases to Global Harmonics (1999)
| Venue: | Appl. Comput. Harmon. Anal |
| Citations: | 2 - 1 self |
BibTeX
@ARTICLE{Bittner99fromlocal,
author = {Kai Bittner and Charles K. Chui},
title = {From Local Cosine Bases to Global Harmonics},
journal = {Appl. Comput. Harmon. Anal},
year = {1999},
volume = {6}
}
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Abstract
In this paper, the reproduction of trigonometric polynomials with two-overlapping local cosine bases is investigated. This study is motivated by the need of representing most effectively a Fourier series in the form of a localized cosine series for the purpose of local analysis; thus providing a vehicle for the transition from classical harmonic analysis to analysis by Wilson-type wavelets. It is shown that there is one and only one class, which is a one-parameter family, of window functions that allow pointwise reproduction of all global harmonics, where the parameter is the order of smoothness of the window functions. It turns out that this class of window functions is also optimal in the sense that all global harmonics are reproduced by using a minimal number of the local trigonometric basis functions. 1 Introduction Following the approach of Sullivan, Rehr, Wilkins, and Wilson in [9] for the localization of trigonometric basis functions, Daubechies, Jaffard, and Journ'e [5] presen...
Keyphrases
global harmonic local cosine base window function one-parameter family local analysis trigonometric polynomial wilson-type wavelet classical harmonic analysis trigonometric basis function local trigonometric basis function two-overlapping local cosine base localized cosine series minimal number fourier series
