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Visualizing Uncertainty in HARDI Tractography Using Superquadric Streamtubes

2014

Conference Paper

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Standard streamtubes for the visualization of diffusion MRI data are rendered either with a circular or with an elliptic cross section whose aspect ratio indicates the relative magnitudes of the medium and minor eigenvalues. Inspired by superquadric tensor glyphs, we propose to render streamtubes with a superquadric cross section, which develops sharp edges to more clearly convey the orientation of the second and third eigenvectors where they are uniquely defined, while maintaining a circular shape when the smaller two eigenvalues are equal. As a second contribution, we apply our novel superquadric streamtubes to visualize uncertainty in the tracking direction of HARDI tractography, which we represent using a novel propagation uncertainty tensor.

Author(s): Wiens, V. and Schlaffke, L. and Schmidt-Wilcke, T. and Schultz, T.
Book Title: Eurographics Conference on Visualization, Short Papers
Year: 2014
Day: 0
Editors: Elmqvist, N. and Hlawitschka, M. and Kennedy, J.

Department(s): Empirical Inference
Research Project(s): Kernel Methods
Bibtex Type: Conference Paper (inproceedings)

DOI: 10.2312/eurovisshort.20141154
Event Name: EuroVis 2014
Event Place: Swansea, Wales, UK

State: Published
URL: http://diglib.eg.org/bitstream/handle/10.2312/eurovisshort.20141154.037-041/037-041.pdf?sequence=1

BibTex

@inproceedings{WiensSSS2014,
  title = {Visualizing Uncertainty in HARDI Tractography Using Superquadric Streamtubes},
  author = {Wiens, V. and Schlaffke, L. and Schmidt-Wilcke, T. and Schultz, T.},
  booktitle = {Eurographics Conference on Visualization, Short Papers},
  editors = {Elmqvist, N. and Hlawitschka, M. and Kennedy, J.},
  year = {2014},
  url = {http://diglib.eg.org/bitstream/handle/10.2312/eurovisshort.20141154.037-041/037-041.pdf?sequence=1}
}