CompAesth 07: Workshop on Computational Aesthetics
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Browsing CompAesth 07: Workshop on Computational Aesthetics by Subject "Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Line and Curve Generation"
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Item The Aesthetics of Graph Visualization(The Eurographics Association, 2007) Bennett, Chris; Ryall, Jody; Spalteholz, Leo; Gooch, Amy; Douglas W. Cunningham and Gary Meyer and Laszlo NeumannThe discipline of graph visualization produces pictorial representations of node link structures. Much effort has been directed toward making such diagrams visually pleasing. A variety of aesthetic heuristics have been proposed, with the assumption that these will improve readability and understanding. We look at a perceptual basis for these heuristics, including Gestalt principles and Norman s emotional design framework. Next, we review the work to date on aesthetic heuristics and examine what has been done to evaluate these heuristics. We summarize this in a framework that outlines graph drawing heuristics, their perceptual basis, and evaluation status.Item Stipple Placement using Distance in a Weighted Graph(The Eurographics Association, 2007) Mould, David; Douglas W. Cunningham and Gary Meyer and Laszlo NeumannWe present a stipple placement method which provides extra emphasis to image features, especially edges. Our algorithm transforms an image into a regular graph, with edge weights given by the local gradient magnitude of the input image. Then, a variant of Disjkstra s algorithm is used to place stipples: new stipples are placed along the frontier, which tends to be aligned with image edges. The resulting stipple distribution approximates a blue noise distribution, but emphasizes edges from the input image. We also show how irregular mosaics can be organized and the mosaic tiles shaped using the same underlying mechanism.