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research article

Ellipse-Preserving Hermite Interpolation and Subdivision

Conti, C.
•
Romani, L.
•
Unser, M.  
2015
Journal of Mathematical Analysis and Applications

We introduce a family of piecewise-exponential functions that have the Hermite interpolation property. Our design is motivated by the search for an effective scheme for the joint interpolation of points and associated tangents on a curve with the ability to perfectly reproduce ellipses. We prove that the proposed Hermite functions form a Riesz basis and that they reproduce prescribed exponential polynomials. We present a method based on Green's functions to unravel their multi-resolution and approximation-theoretic properties. Finally, we derive the corresponding vector and scalar subdivision schemes, which lend themselves to a fast implementation. The proposed vector scheme is interpolatory and level-dependent, but its asymptotic behavioris the same as the classical cubic Hermite spline algorithm. The same convergence properties—i.e., fourth order of approximation—are hence ensured.

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Type
research article
DOI
10.1016/j.jmaa.2015.01.017
Web of Science ID

WOS:000358623800010

Author(s)
Conti, C.
Romani, L.
Unser, M.  
Date Issued

2015

Publisher

Elsevier

Published in
Journal of Mathematical Analysis and Applications
Volume

426

Issue

1

Start page

211

End page

227

Subjects

Exponential Hermite splines

•

Cardinal Hermite cycloidal splines

•

Hermite interpolation

•

Ellipse-reproduction

•

Subdivision

URL

URL

http://bigwww.epfl.ch/publications/conti1501.html

URL

http://bigwww.epfl.ch/publications/conti1501.pdf

URL

http://bigwww.epfl.ch/publications/conti1501.ps
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LIB  
Available on Infoscience
July 28, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/116718
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