257 search results - page 22 / 52 » The convexity spectra of graphs |
SIAMCO
2000
13 years 7 months ago
2000
Given a nonlinear function h separating a convex and a concave function, we provide various conditions under which there exists an affine separating function whose graph is somewhe...
IJCV
2010
13 years 2 months ago
2010
In this paper, we address the problem of photometric invariance in multispectral imaging making use of an optimisation approach based upon the dichromatic model. In this manner, w...
EJC
2008
13 years 7 months ago
2008
We introduce a notion of Dyck paths with coloured ascents. For several ways of colouring, when the set of colours is itself some class of lattice paths, we establish bijections be...
NETWORKS
2008
13 years 7 months ago
2008
Given a graph where increasing the weight of an edge has a nondecreasing convex piecewise linear cost, we study the problem of finding a minimum cost increase of the weights so tha...
WADS
1995
Springer
13 years 11 months ago
1995
Springer
We consider the problem of obtaining “nice” quadrangulations of planar sets of points. For many applications “nice” means that the quadrilaterals obtained are convex if po...