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research article

Exponential splines and minimal-support bases for curve representation

Delgado-Gonzalo, R.
•
Thevenaz, P.
•
Unser, M.  
2012
Computer Aided Geometric Design

Our interest is to characterize the spline-like integer-shift-invariant bases capable of reproducing exponential polynomial curves. We prove that any compact-support function that reproduces a subspace of the exponential polynomials can be expressed as the convolution of an exponential B-spline with a compact-support distribution. As a direct consequence of this factorization theorem, we show that the minimal-support basis functions of that subspace are linear combinations of derivatives of exponential B-splines. These minimal-support basis functions form a natural multiscale hierarchy, which we utilize to design fast multiresolution algorithms and subdivision schemes for the representation of closed geometric curves. This makes them attractive from a computational point of view. Finally, we illustrate our scheme by constructing minimal-support bases that reproduce ellipses and higher-order harmonic curves. (C) 2011 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.cagd.2011.10.005
Web of Science ID

WOS:000300130300002

Author(s)
Delgado-Gonzalo, R.
Thevenaz, P.
Unser, M.  
Date Issued

2012

Publisher

Elsevier

Published in
Computer Aided Geometric Design
Volume

29

Start page

109

End page

128

Subjects

Exponential B-spline

•

Exponential polynomial

•

Interpolation

•

Parameterization

•

Subdivision

•

Strang-Fix

•

Circular harmonics

•

Binary Subdivision Schemes

•

Part I

•

Approximation

•

Refinement

•

Algorithms

•

Order

URL

URL

http://bigwww.epfl.ch/publications/delgadogonzalo1201.html

URL

http://bigwww.epfl.ch/publications/delgadogonzalo1201.pdf

URL

http://bigwww.epfl.ch/publications/delgadogonzalo1201.ps
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LIB  
Available on Infoscience
March 15, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/78820
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