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CCCG
2008
13 years 7 months ago
Draining a Polygon - or - Rolling a Ball out of a Polygon
We introduce the problem of draining water (or balls representing water drops) out of a punctured polygon (or a polyhedron) by rotating the shape. For 2D polygons, we obtain combi...
Greg Aloupis, Jean Cardinal, Sébastien Coll...
CCCG
2010
13 years 7 months ago
Hausdorff core of a one reflex vertex polygon
In this paper we present a polynomial time algorithm for computing a Hausdorff core of a polygon with a single reflex vertex. A Hausdorff core of a polygon P is a convex polygon Q...
Robert Fraser, Patrick K. Nicholson
COCOON
2006
Springer
13 years 9 months ago
On Unfolding Lattice Polygons/Trees and Diameter-4 Trees
We consider the problems of straightening polygonal trees and convexifying polygons by continuous motions such that rigid edges can rotate around vertex joints and no edge crossing...
Sheung-Hung Poon
ISAAC
2005
Springer
86views Algorithms» more  ISAAC 2005»
13 years 11 months ago
On the Computation of Colored Domino Tilings of Simple and Non-simple Orthogonal Polygons
We explore the complexity of computing tilings of orthogonal polygons using colored dominoes. A colored domino is a rotatable 2 × 1 rectangle that is partitioned into two unit squ...
Chris Worman, Boting Yang
ECCV
2000
Springer
14 years 8 months ago
Gray Scale and Rotation Invariant Texture Classification with Local Binary Patterns
This paper presents a theoretically very simple yet efficient approach for gray scale and rotation invariant texture classification based on local binary patterns and nonparametric...
Timo Ojala, Matti Pietikäinen, Topi Mäen...