Interactive deformation and visualization of large volume datasets

Florian Schulze*, Katja Bühler, Markus Hadwiger

*Corresponding author for this work

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

11 Scopus citations

Abstract

This paper presents an integrated approach for interactive direct volume deformation and simultaneous visualization. The fundamental requirement is that interactive performance without pre-processing must be achieved for large volume data, where at any time up to one million elements participate in a deformation that is applied interactively by picking and dragging in the 3D view. Current physically-based approaches are still one or two orders of magnitude away from this goal. In contrast, our approach extends the non-physical ChainMail algorithm and combines it with on-the-fly resampling and GPU ray-casting. Special transfer functions assign material properties depending on volume density. The affected subvolume is deformed and resampled onto a rectilinear grid on the CPU, and updates the volume on the GPU where it is rendered using ray-casting. While the deformation is already being displayed, its quality is simultaneously refined via an iterative relaxation procedure executed in a parallel thread.

Original languageEnglish (US)
Title of host publicationGRAPP 2007 - Proceedings of the 2nd International Conference on Computer Graphics Theory and Applications
Pages39-46
Number of pages8
VolumeAS
EditionIE/-
StatePublished - 2007
Externally publishedYes
Event2nd International Conference on Computer Graphics Theory and Applications, GRAPP 2007 - Barcelona, Spain
Duration: Mar 8 2007Mar 11 2007

Other

Other2nd International Conference on Computer Graphics Theory and Applications, GRAPP 2007
CountrySpain
CityBarcelona
Period03/8/0703/11/07

Keywords

  • Deformation
  • Resampling
  • Volume Rendering

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Software

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