Volume seedlings

Michael F. Cohen, James Painter, Mihir Mehta, Kwan-Liu Ma

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

20 Scopus citations


Recent advances in software and hardware technology have made direct ray-Traced volume rendering of 3-d scalar data a feasible and effective method for imaging of the data's contents. The time costs of these rendering techniques still do not permit full interaction with the data, and all of the parameters effecting the resulting images. This paper presents a set of real-Time interaction techniques which have been developed to permit exploration of a volume data set. Within the limitation of a static viewpoint, the user is able to interactively alter the position and shape of an area of interest, and modify local viewing parameters. A run length encoded cache of volume rendering samples provides the means to rerender the volume at interactive rates. The user locates and plants "seeds" in areas of interest through the use of data slicing and isosurface techniques. Image processing techniques applied to volumes ( i.e. volume processing), can then automatically form regions of interest which in turn modify the rendering parameters. This "region growing" of "seedlings" incrementally alters the image in real-Time providing further visual cues concerning the contents of the data. These tools allow interactive exploration of internal structures in the data which may be obscured by other imaging algorithms. Magnetic Resonance Angiography (MRA) provides a driving application for this technology. Results from preliminary studies of MRA data are included.

Original languageEnglish (US)
Title of host publicationProceedings of the 1992 Symposium on Interactive 3D Graphics, I3D 1992
PublisherAssociation for Computing Machinery
Number of pages7
VolumePart F129616
ISBN (Electronic)0897914678
StatePublished - Jun 1 1992
Externally publishedYes
Event1992 Symposium on Interactive 3D Graphics, I3D 1992 - Cambridge, United States
Duration: Mar 29 1992Apr 1 1992


Other1992 Symposium on Interactive 3D Graphics, I3D 1992
Country/TerritoryUnited States

ASJC Scopus subject areas

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


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