Direct visualization of deformation in volumes

Authors:
Stef Busking;Charl P. Botha;Frits H. Post
Affiliations:
Delft University of Technology, the Netherlands;Delft University of Technology, the Netherlands;Delft University of Technology, the Netherlands
Venue:
EuroVis'09 Proceedings of the 11th Eurographics / IEEE - VGTC conference on Visualization
Year:
2009

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Abstract

Deformation is a topic of interest in many disciplines. In particular in medical research, deformations of surfaces and even entire volumetric structures are of interest. Clear visualization of such deformations can lead to important insight into growth processes and progression of disease. We present new techniques for direct focus+context visualization of deformation fields representing transformations between pairs of volumetric datasets. Typically, such fields are computed by performing a non-rigid registration between two data volumes. Our visualization is based on direct volume rendering and uses the GPU to compute and interactively visualize features of these deformation fields in real-time. We integrate visualization of the deformation field with visualization of the scalar volume affected by the deformations. Furthermore, we present a novel use of texturing in volume rendered visualizations to show additional properties of the vector field on surfaces in the volume.