Results 11 to 20 of about 4,192 (230)

Drawing Graphs on Few Circles and Few Spheres

open access: yesJournal of Graph Algorithms and Applications, 2019
Given a drawing of a graph, its visual complexity is defined as the number of geometrical entities in the drawing, for example, the number of segments in a straight-line drawing or the number of arcs in a circular-arc drawing (in 2D).
Myroslav Kryven   +2 more
doaj   +1 more source

Triangulations with Circular Arcs

open access: yesJournal of Graph Algorithms and Applications, 2015
An important objective in the choice of a triangulation of a given point set is that the smallest angle becomes as large as possible. When triangulation edges are straight line segments, it is known that the Delaunay triangulation is the optimal solution.
Oswin Aichholzer   +5 more
doaj   +1 more source

Pathwidth of Circular-Arc Graphs [PDF]

open access: yes, 2007
The pathwidth of a graph G is the minimum clique number of H minus one, over all interval supergraphs H of G. Although pathwidth is a well-known and well-studied graph parameter, there are extremely few graph classes for which pathwidh is known to be tractable in polynomial time.
Karol Suchan, Ioan Todinca
openaire   +1 more source

Drawing Graphs with Few Arcs

open access: yesJournal of Graph Algorithms and Applications, 2015
Let G=(V,E) be a planar graph. An arrangement of circular arcs is called a composite arc-drawing of G, if its 1-skeleton is isomorphic to G. Similarly, a composite segment-drawing is described by an arrangement of straight-line segments.
André Schulz
doaj   +1 more source

Power Domination in Circular-Arc Graphs [PDF]

open access: yesAlgorithmica, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chung-Shou Liao, D. T. Lee
openaire   +1 more source

Smooth Orthogonal Layouts

open access: yesJournal of Graph Algorithms and Applications, 2013
We study the problem of creating smooth orthogonal layouts for planar graphs. While in traditional orthogonal layouts every edge is made of a sequence of axis-aligned line segments, in smooth orthogonal layouts every edge is made of axis-aligned segments
Michael Bekos   +3 more
doaj   +1 more source

A High-Robust Automatic Reading Algorithm of Pointer Meters Based on Text Detection

open access: yesSensors, 2020
Automatic reading of pointer meters is of great significance for efficient measurement of industrial meters. However, existing algorithms are defective in the accuracy and robustness to illumination shooting angle when detecting various pointer meters ...
Zhu Li   +4 more
doaj   +1 more source

Universal Point Sets for Drawing Planar Graphs with Circular Arcs

open access: yesJournal of Graph Algorithms and Applications, 2014
We prove that there exists a set S of n points in the plane such that every n-vertex planar graph G admits a planar drawing in which every vertex of G is placed on a distinct point of S and every edge of G is drawn as a circular arc.
Patrizio Angelini   +7 more
doaj   +1 more source

On the Cubicity of AT-Free Graphs and Circular-Arc Graphs [PDF]

open access: yes, 2009
9 pages, 0 ...
L. Sunil Chandran   +2 more
openaire   +2 more sources

Simple Algorithms for Network Visualization: A Tutorial

open access: yesTsinghua Science and Technology, 2012
The graph drawing and information visualization communities have developed many sophisticated techniques for visualizing network data, often involving complicated algorithms that are difficult for the uninitiated to learn.
Michael J. McGuffin
doaj   +1 more source

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