Visualizing Uncertainty in HARDI Tractography Using Superquadric Streamtubes

Wiens, Vitalis; Schlaffke, Lara; Schmidt-Wilcke, Tobias; Schultz, Thomas

Visualizing Uncertainty in HARDI Tractography Using Superquadric Streamtubes

Files

037-041.pdf (2.08 MB)

Date

2014

Authors

Wiens, Vitalis
Schlaffke, Lara
Schmidt-Wilcke, Tobias
Schultz, Thomas

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

        @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
}
}