Semantics by Analogy for Illustrative Volume Visualization

Abstract : We present an interactive graphical approach for the explicit specification of semantics for volume visualization. This explicit and graphical specification of semantics for volumetric features allows us to visually assign meaning to both input and output parameters of the visualization mapping. This is in contrast to the implicit way of specifying semantics using transfer functions. In particular, we demonstrate how to realize a dynamic specification of semantics which allows to flexibly explore a wide range of mappings. Our approach is based on three concepts. First, we use semantic shader augmentation to automatically add rule-based rendering functionality to static visualization mappings in a shader program, while preserving the visual abstraction that the initial shader encodes. With this technique we extend recent developments that define a mapping between data attributes and visual attributes with rules, which are evaluated using fuzzy logic. Second, we let users define the semantics by analogy through brushing on renderings of the data attributes of interest. Third, the rules are specified graphically in an interface that provides visual clues for potential modifications. Together, the presented methods offer a high degree of freedom in the specification and exploration of rule-based mappings and avoid the limitations of a linguistic rule formulation.
Type de document :
Article dans une revue
Computers and Graphics, Elsevier, 2012, 36 (3), pp.201-213. 〈10.1016/j.cag.2011.10.006〉
Liste complète des métadonnées

Littérature citée [25 références]  Voir  Masquer  Télécharger
Contributeur : Isenberg Tobias <>
Soumis le : vendredi 25 janvier 2013 - 16:34:22
Dernière modification le : lundi 9 octobre 2017 - 13:18:03
Document(s) archivé(s) le : vendredi 26 avril 2013 - 03:57:32


Fichiers produits par l'(les) auteur(s)




Moritz Gerl, Peter Rautek, Tobias Isenberg, Eduard Gröller. Semantics by Analogy for Illustrative Volume Visualization. Computers and Graphics, Elsevier, 2012, 36 (3), pp.201-213. 〈10.1016/j.cag.2011.10.006〉. 〈hal-00781213〉



Consultations de la notice


Téléchargements de fichiers