Visualizing Uncertainty in HARDI Tractography Using Superquadric Streamtubes

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Date
2014
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Volume Title
Publisher
The Eurographics Association
Abstract
Standard streamtubes for the visualization of diffusion MRI data are rendered either with a circular or with anelliptic 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 theyare uniquely defined, while maintaining a circular shape when the smaller two eigenvalues are equal. As a secondcontribution, we apply our novel superquadric streamtubes to visualize uncertainty in the tracking direction ofHARDI tractography, which we represent using a novel propagation uncertainty tensor
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@inproceedings{
:10.2312/eurovisshort.20141154
, booktitle = {
EuroVis - Short Papers
}, editor = {
N. Elmqvist and M. Hlawitschka and J. Kennedy
}, title = {{
Visualizing Uncertainty in HARDI Tractography Using Superquadric Streamtubes
}}, author = {
Wiens, Vitalis
and
Schlaffke, Lara
and
Schmidt-Wilcke, Tobias
and
Schultz, Thomas
}, year = {
2014
}, publisher = {
The Eurographics Association
}, ISBN = {
978-3-905674-69-9
}, DOI = {
/10.2312/eurovisshort.20141154
} }
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