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Green Image
Issue No. 12 - Dec. (2011 vol. 17)
ISSN: 1077-2626
pp: 2364-2373
Ozan Ersoy , University of Groningen, The Netherlands
Christophe Hurter , DGAC/DSNA, Toulouse, France
Fernando Paulovich , University of São Paulo, São Carlos/SP, Brazil
Gabriel Cantareiro , University of São Paulo, São Carlos/SP, Brazil
Alex Telea , University of Groningen, The Netherlands
In this paper, we present a novel approach for constructing bundled layouts of general graphs. As layout cues for bundles, we use medial axes, or skeletons, of edges which are similar in terms of position information. We combine edge clustering, distance fields, and 2D skeletonization to construct progressively bundled layouts for general graphs by iteratively attracting edges towards the centerlines of level sets of their distance fields. Apart from clustering, our entire pipeline is image-based with an efficient implementation in graphics hardware. Besides speed and implementation simplicity, our method allows explicit control of the emphasis on structure of the bundled layout, i.e. the creation of strongly branching (organic-like) or smooth bundles. We demonstrate our method on several large real-world graphs.
Graph layouts, edge bundles, image-based information visualization.

G. Cantareiro, A. Telea, C. Hurter, F. Paulovich and O. Ersoy, "Skeleton-Based Edge Bundling for Graph Visualization," in IEEE Transactions on Visualization & Computer Graphics, vol. 17, no. , pp. 2364-2373, 2011.
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