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Interaction-Dependent Semantics for Illustrative Volume Rendering

Peter Rautek, Stefan Bruckner, M. Eduard Gröller

JOURNAL ARTICLE: Computer Graphics Forum, vol. 27, no. 3, pp. 847–854, 2008. DOI: 10.1111/j.1467-8659.2008.01216.x

Abstract

In traditional illustration the choice of appropriate styles and rendering techniques is guided by the intention of the artist. For illustrative volume visualizations it is difficult to specify the mapping between the 3D data and the visual representation that preserves the intention of the user. The semantic layers concept establishes this mapping with a linguistic formulation of rules that directly map data features to rendering styles. With semantic layers fuzzy logic is used to evaluate the user defined illustration rules in a preprocessing step. In this paper we introduce interaction-dependent rules that are evaluated for each frame and are therefore computationally more expensive. Enabling interaction-dependent rules, however, allows the use of a new class of semantics, resulting in more expressive interactive illustrations. We show that the evaluation of the fuzzy logic can be done on the graphics hardware enabling the efficient use of interaction-dependent semantics. Further we introduce the flat rendering mode and discuss how different rendering parameters are influenced by the rule base. Our approach provides high quality illustrative volume renderings at interactive frame rates, guided by the specification of illustration rules.

Published

Computer Graphics Forum

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BibTeX

@ARTICLE{Rautek-2008-ISI,
  author = {Peter Rautek and Stefan Bruckner and M. Eduard Gr{\"o}ller},
  title = {Interaction-Dependent Semantics for Illustrative Volume Rendering},
  journal = {Computer Graphics Forum},
  year = {2008},
  volume = {27},
  pages = {847--854},
  number = {3},
  month = may,
  abstract = {In traditional illustration the choice of appropriate styles and rendering
	techniques is guided by the intention of the artist. For illustrative
	volume visualizations it is difficult to specify the mapping between
	the 3D data and the visual representation that preserves the intention
	of the user. The semantic layers concept establishes this mapping
	with a linguistic formulation of rules that directly map data features
	to rendering styles. With semantic layers fuzzy logic is used to
	evaluate the user defined illustration rules in a preprocessing step.
	In this paper we introduce interaction-dependent rules that are evaluated
	for each frame and are therefore computationally more expensive.
	Enabling interaction-dependent rules, however, allows the use of
	a new class of semantics, resulting in more expressive interactive
	illustrations. We show that the evaluation of the fuzzy logic can
	be done on the graphics hardware enabling the efficient use of interaction-dependent
	semantics. Further we introduce the flat rendering mode and discuss
	how different rendering parameters are influenced by the rule base.
	Our approach provides high quality illustrative volume renderings
	at interactive frame rates, guided by the specification of illustration
	rules.},
  doi = {10.1111/j.1467-8659.2008.01216.x},
  event = {Eurographics/ IEEE-VGTC Symposium on Visualization},
  keywords = {volume visualization, illustrative visualization, semantics, interaction},
  location = {Eindhoven, The Netherlands},
  url = {http://www.cg.tuwien.ac.at/research/publications/2008/Rautek-2008-IDS/}
}






 Last Modified: Stefan Bruckner, 2014-09-16