Fast global illumination for interactive volume visualization

Yubo Zhang, Kwan-Liu Ma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Scopus citations

Abstract

High quality global illumination can enhance the visual perception of depth cue and local thickness of volumetric data but it is seldom used in scientific visualization because of its high computational cost. This paper presents a novel grid-based illumination technique which is specially designed and optimized for volume visualization purpose. It supports common light sources and dynamic transfer function editing. Our method models light propagation, including both absorption and scattering, in a volume using a convection-diffusion equation that can be solved numerically. The main advantage of such technique is that the light modeling and simulation can be separated, where we can use a unified partial-differential equation to model various illumination effects, and adopt highly-parallelized grid-based numerical schemes to solve it. Results show that our method can achieve high quality volume illumination with dynamic color and opacity mapping and various light sources in real-time. The added illumination effects can greatly enhance the visual perception of spatial structures of volume data.

Original languageEnglish (US)
Title of host publicationProceedings - I3D 2013
Subtitle of host publicationACM SIGGRAPH Symposium on Interactive 3D Graphics and Games
Pages55-62
Number of pages8
DOIs
Publication statusPublished - Mar 21 2013
Event17th ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, I3D 2013 - Orlando, FL, United States
Duration: Mar 21 2013Mar 23 2013

Other

Other17th ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, I3D 2013
CountryUnited States
CityOrlando, FL
Period3/21/133/23/13

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Keywords

  • Global illumination
  • Interactive visualization
  • Volume rendering

ASJC Scopus subject areas

  • Software
  • Human-Computer Interaction
  • Computer Graphics and Computer-Aided Design

Cite this

Zhang, Y., & Ma, K-L. (2013). Fast global illumination for interactive volume visualization. In Proceedings - I3D 2013: ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (pp. 55-62) https://doi.org/10.1145/2448196.2448205