Interrogative visualization: Embedding deformation and constructive solid geometry into volume visualization

Srinivasan Rajagopalan, Richard Robb

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


Existing volume visualization algorithms lack sophisticated volumetric modeling capabilities to represent, construct and manipulate objects of interest within a volumetric dataset. Integrating manipulations such as non-linear deformations and constructions similar to those in solid modeling into the visualization process would have significant value in surgical planning and simulation. Interrogative visualization-the ability to extract, enumerate, deform and track objects of interest is also crucial in other visualization tasks. The conventional approach to visualize the volume deformation and construction process is to construct an intermediate volume for each step of manipulation. This is prohibitively time consuming and costly. This paper presents an approach to overcome this constraint. We model the target capture space as octrees. The target octree is adaptively subdivided to efficiently balance the complexity of deformation and visualization. The source volumetric data can either be in octree or conventional 3D array format. Deformations are specified by landmark displacements, and in-between deformation is filled in by scattered data interpolation. Volumetric modeling is supported by a Constructive Solid Geometry (CSG) structure. Spatial Coherency is exploited in the view-dependent node traversal and projection of individual octree nodes.

Original languageEnglish (US)
Title of host publicationMedicine Meets Virtual Reality 11 - NextMed
Subtitle of host publicationHealth Horizon
PublisherIOS Press
Number of pages7
ISBN (Print)1586033204, 9781586033200
StatePublished - 2003
Event11th Annual Medicine Meets Virtual Reality Conference, MMVR 2003 - Newport Beach, CA, United States
Duration: Jan 22 2003Jan 25 2003

Publication series

NameStudies in Health Technology and Informatics
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365


Other11th Annual Medicine Meets Virtual Reality Conference, MMVR 2003
Country/TerritoryUnited States
CityNewport Beach, CA

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management


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