A feature-driven approach to locating optimal viewpoints for volume visualization

Shigeo Takahashi, Issei Fujishiro, Yuriko Takeshima, Tomoyuki Nishita

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

129 Citations (Scopus)


Optimal viewpoint selection is an important task because it considerably influences the amount of information contained in the 2D projected images of 3D objects, and thus dominates their first impressions from a psychological point of view. Although several methods have been proposed that calculate the optimal positions of viewpoints especially for 3D surface meshes, none has been done for solid objects such as volumes. This paper presents a new method of locating such optimal viewpoints when visualizing volumes using direct volume rendering. The major idea behind our method is to decompose an entire volume into a set of feature components, and then find a globally optimal viewpoint by finding a compromise between locally optimal viewpoints for the components. As the feature components, the method employs interval volumes and their combinations that characterize the topological transitions of isosurfaces according to the scalar field. Furthermore, opacity transfer functions are also utilized to assign different weights to the decomposed components so that users can emphasize features of specific interest in the volumes. Several examples of volume datasets together with their optimal positions of view-points are exhibited in order to demonstrate that the method can effectively guide naive users to find optimal projections of volumes.

Original languageEnglish
Title of host publicationVIS 05
Subtitle of host publicationIEEE Visualization 2005, Proceedings
Number of pages1
Publication statusPublished - 2005
Externally publishedYes
EventVIS 05: IEEE Visualization 2005, Proceedings - Minneapolis, MN, United States
Duration: 2005 Oct 232005 Oct 28

Publication series

NameProceedings of the IEEE Visualization Conference


OtherVIS 05: IEEE Visualization 2005, Proceedings
Country/TerritoryUnited States
CityMinneapolis, MN


  • Direct volume rendering
  • Interval volumes
  • Level-set graphs
  • Viewpoint entropy
  • Viewpoint selection

ASJC Scopus subject areas

  • Software
  • General Computer Science
  • General Engineering
  • Computer Graphics and Computer-Aided Design


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