filename     : p_VR2006_steinemann_hybridcutting.pdf
entry        : article
conference   : Proc. of IEEE Computer Society Conference on Virtual Reality (VR 2006), Alexandria VA, USA, March 26-29
pages        : 35-42
year         : 2006
month        : March
title        : Hybrid Cutting of Deformable Solids
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author       : D. Steinemann, M. Harders, M. Gross, G. Szekely
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ISSN/ISBN    : 1-4244-0224-7
editor       : 
publisher    : IEEE Computer Society
publ.place   : Washington, DC, USA
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issue        :
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abstract     : A central training objective of virtual reality based surgical simulation
is the removal of pathologic tissue. This necessitates stable,
real-time updates of the underlying mesh representation. Within the
framework of a hysteroscopy simulator, we have developed a hybrid
cutting approach for tetrahedral meshes. It combines the topological
update by subdivision with adjustments of the existing topology.
Moreover, the mechanical and the visual model are decoupled,
thus allowing different resolutions for the underlying mesh representations.
With our method, we can closely approximate an arbitrary,
user-de_ned cut surface while avoiding the creation of small
or badly shaped elements, thus strongly reducing stability problems
in the subsequent deformation computation. The presented
approach has been integrated into a virtual reality training system
for hysteroscopic interventions. The performance of the algorithm
is demonstrated by examples of intra-uterine tumor ablations.