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JMIV
2011
135views more  JMIV 2011»
13 years 3 months ago
Periodic Plus Smooth Image Decomposition
When the Discrete Fourier Transform of an image is computed, the image is implicitly assumed to be periodic. Since there is no reason for opposite borders to be alike, the “peri...
Lionel Moisan
CAGD
2008
119views more  CAGD 2008»
13 years 7 months ago
A local fitting algorithm for converting planar curves to B-splines
In this paper we present a local fitting algorithm for converting smooth planar curves to Bsplines. For a smooth planar curve a set of points together with their tangent vectors a...
Chongyang Deng, Xunnian Yang
MICS
2007
90views more  MICS 2007»
13 years 8 months ago
Approximation by Conic Splines
Abstract. We show that the complexity of a parabolic or conic spline approximating a sufficiently smooth curve with non-vanishing curvature to within Hausdorff distance ε is c1ε...
Sunayana Ghosh, Sylvain Petitjean, Gert Vegter
CAGD
2005
86views more  CAGD 2005»
13 years 8 months ago
A variational approach to spline curves on surfaces
Given an m-dimensional surface in Rn , we characterize parametric curves in , which interpolate or approximate a sequence of given points pi and minimize a given energy functio...
Helmut Pottmann, Michael Hofer
ADCM
2000
39views more  ADCM 2000»
13 years 8 months ago
Uncertainty products of local periodic wavelets
This paper is on the angle-frequency localization of periodic scaling functions and wavelets. It is shown that the uncertainty products of uniformly local, uniformly regular and u...
Say Song Goh, Chee Heng Yeo