Sampling set conditions in weighted multiply generated shift-invariant spaces and their applications
نویسندگان
چکیده
منابع مشابه
NON-UNIFORM SAMPLING IN MULTIPLY GENERATED SHIFT-INVARIANT SUBSPACES OF Lp(IR)
Given the samples {f(xj) : j ∈ J} of a function f belonging to a shift invariant subspace of Lp(IR), we give a fast reconstruction algorithm that allows the exact reconstruction of f , as long as the sampling set X = {xj : j ∈ J} is sufficiently dense.
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This article concerns the problem of stable recovering of any function in a shiftinvariant space from irregular samples of some filtered versions of the function itself. These samples arise as a perturbation of regular samples. The starting point is the generalized regular sampling theory which allows to recover any function f in a shiftinvariant space from the samples at {rn}n∈Z of s filtered ...
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This article discusses modern techniques for non-uniform sampling and reconstruction of functions in shift-invariant spaces. The reconstruction of a function or signal or image f from its non-uniform samples f(xj) is a common task in many applications in data or signal or image processing. The non-uniformity of the sampling set is often a fact of life and prevents the use of the standard method...
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Abstract— In this paper, a necessary and sufficient condition for sampling in the general framework of shift invariant spaces is derived. Then this result is applied respectively to the regular sampling and the perturbation of regular sampling in shift invariant spaces. A simple necessary and sufficient condition for regular sampling in shift invariant spaces is attained. Furthermore, an improv...
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In this correspondence, a necessary and sufficient condition for sampling in the general framework of shift-invariant spaces is derived. Then this result is applied, respectively, to the regular sampling and the perturbation of regular sampling in shift-invariant spaces. A simple necessary and sufficient condition for regular sampling in shift-invariant spaces is attained. Furthermore, an impro...
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ژورنال
عنوان ژورنال: Applied and Computational Harmonic Analysis
سال: 2007
ISSN: 1063-5203
DOI: 10.1016/j.acha.2006.10.004