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CVPR
2007
IEEE
14 years 8 months ago
The Hyperbolic Geometry of Illumination-Induced Chromaticity Changes
The non-negativity of color signals implies that they span a conical space with a hyperbolic geometry. We use perspective projections to separate intensity from chromaticity, and ...
Reiner Lenz, Pedro Latorre Carmona, Peter Meer
NN
2006
Springer
113views Neural Networks» more  NN 2006»
13 years 6 months ago
Large-scale data exploration with the hierarchically growing hyperbolic SOM
We introduce the Hierarchically Growing Hyperbolic Self-Organizing Map (H2 SOM) featuring two extensions of the HSOM (hyperbolic SOM): (i) a hierarchically growing variant that al...
Jörg Ontrup, Helge Ritter
ISAAC
2005
Springer
106views Algorithms» more  ISAAC 2005»
13 years 11 months ago
Distance Labeling in Hyperbolic Graphs
A graph G is δ-hyperbolic if for any four vertices u, v, x, y of G the two larger of the three distance sums dG(u, v) + dG(x, y), dG(u, x) + dG(v, y), dG(u, y) + dG(v, x) differ b...
Cyril Gavoille, Olivier Ly
CORR
2007
Springer
149views Education» more  CORR 2007»
13 years 6 months ago
About the domino problem in the hyperbolic plane, a new solution
In this paper, we complete the construction of paper [9, 11]. Together with the proof contained in [9, 11], this paper definitely proves that the general problem of tiling the hy...
Maurice Margenstern
DCC
2005
IEEE
14 years 5 months ago
Hyperbolic Fibrations and q-Clans
R. D. Baker, Gary L. Ebert, Tim Penttila