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174
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JCAM
2011
14 years 8 months ago
2011
Root lattices are efficient sampling lattices for reconstructing isotropic signals in arbitrary dimensions, due to their highly symmetric structure. One root lattice, the Cartesia...
194
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MMAS
2011
Springer
14 years 8 months ago
2011
Springer
This paper introduces a new sweeping preconditioner for the iterative solution of the variable coefficient Helmholtz equation in two and three dimensions. The algorithms follow th...
143
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TMC
2012
13 years 7 months ago
2012
In this paper we study the availability of TV white spaces in Europe. Specifically, we focus on the 470–790 MHz UHF band, which will predominantly remain in use for TV broadcas...
150
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MICCAI
2008
Springer
16 years 6 months ago
2008
Springer
In this paper, we propose a novel explicit 2D+t cyclic shape model that extends the Point Distribution Model (PDM) to shapes like myocardial contours with cyclic dynamics. We also ...
157
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COMPGEOM
1992
ACM
15 years 9 months ago
1992
ACM
We present a simple randomized algorithm which solves linear programs with n constraints and d variables in expected minfO(d 22dn); e 2 pdln(n= p d)+O( p d+lnn)g time in the unit ...