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CCCG
2010
13 years 9 months ago
On degeneracy of lower envelopes of algebraic surfaces
We analyze degeneracy of lower envelopes of algebraic surfaces. We focus on the cases omitted in the existing complexity analysis of lower envelopes [Halperin and Sharir 1993], an...
Kimikazu Kato
ISVC
2010
Springer
13 years 6 months ago
Image Enhancement by Median Filters in Algebraic Reconstruction Methods: An Experimental Study
Algebraic methods for image reconstruction provide good solutions even if only few projections are available. However, they can create noisy images if the number of iterations or t...
Norbert Hantos, Péter Balázs
TOG
2012
237views Communications» more  TOG 2012»
11 years 10 months ago
An algebraic model for parameterized shape editing
We present an approach to high-level shape editing that adapts the structure of the shape while maintaining its global characteristics. Our main contribution is a new algebraic mo...
Martin Bokeloh, Michael Wand, Hans-Peter Seidel, V...
EWDW
1990
13 years 11 months ago
Semantics of Object-Oriented Data Models - The Evolving Algebra Approach
The formal description of the semantics of object-oriented data models is still an open problem. Some characteristic features of object-oriented data models, such as methods and i...
Georg Gottlob, Gerti Kappel, Michael Schrefl
AMC
2006
116views more  AMC 2006»
13 years 7 months ago
An algebraic construction of orthonormal M-band wavelets with perfect reconstruction
This paper presents an algebraic approach to construct M-band orthonormal wavelet bases with perfect reconstruction. We first derive the system of constraint equations of M-band f...
Tony Lin, Shufang Xu, Qingyun Shi, Pengwei Hao