Automating transfer function design for volume rendering using hierarchical clustering of material boundaries

P. Sereda, A. Vilanova, F.A. Gerritsen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Transfer function design plays a crucial role in direct volume rendering. Furthermore, it has a major influence on the efficiency of the visualization process. We have developed a framework that facilitates the semi-automatic design of transfer functions. Similarly to other approaches we generate clusters in the transfer function domain. We created a real-time interaction with a hierarchy of clusters. This interaction effectively substitutes cumbersome settings of clustering thresholds. Our framework is also able to easily combine different clustering criteria. We have developed two similarity measures for clustering of material boundaries. One is based on the similarity of the boundaries in the transfer function domain and the other on their spatial relation. We use the LH space as the transfer function domain. This space facilitates the clustering of material boundaries. We demonstrate our approach on several examples.
Original languageEnglish
Title of host publicationEuroVis - Eurographics/IEEE-VGTC Symposium on Visualization, 8 – 10 May 2006, Lisbon, Portugal
EditorsT. Ertl, B. Sousa Santos
Pages243–250
DOIs
Publication statusPublished - 2006
Event8th Eurographics/IEEE VGTC Symposium on Visualization (EuroVis 2006), May 8-10, 2006, Lisbon, Portugal - Lisbon, Portugal
Duration: 8 May 200610 May 2006

Conference

Conference8th Eurographics/IEEE VGTC Symposium on Visualization (EuroVis 2006), May 8-10, 2006, Lisbon, Portugal
Abbreviated titleEuroVis 2006
CountryPortugal
CityLisbon
Period8/05/0610/05/06

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