Fractional and complex pseudo-splines and the construction of Parseval frames
Fractional and complex pseudo-splines and the construction of Parseval frames
复制标题
分数和复杂的伪样条以及 Parseval 框架的构造
DOI:
10.1016/j.amc.2017.06.023
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Peter Massopust
中科院分区:
文献类型:
--
作者:
Ole Christensen;Brigitte Forster;Peter Massopust
Pseudo-splines of integer order (m, ℓ) were introduced by Daubechies, Han, Ron, and Shen as a family which allows interpolation between the classical B-splines and the Daubechies’ scaling functions. The purpose of this paper is to generalize the pseudo-splines to fractional and complex orders (z, ℓ) with α≔ Re z≥ 1. This allows increased flexibility in regard to smoothness: instead of working with a discrete family of functions from C m, m∈ N 0, one uses a continuous family of functions belonging to the Hölder spaces C α− 1. The presence of the imaginary part of z allows for direct utilization in complex transform techniques for signal and image analyses. We also show that in analogue to the integer case, the generalized pseudo-splines lead to constructions of Parseval wavelet frames via the unitary extension principle. The regularity and approximation order of this new class of generalized splines is also discussed.
影响因子:
2.5
作者:
Forster, B;Blu, T;Unser, M
通讯作者:
Unser, M
DOI:
10.1007/978-3-319-08801-3_15
发表时间:
2014
期刊:
--
影响因子:
--
作者:
B. Forster
通讯作者:
B. Forster
影响因子:
1.6
作者:
F. Luisier;T. Blu;B. Forster;M. Unser
通讯作者:
M. Unser