Real-time topology modification for finite element models with haptic feedback
Identifieur interne : 006565 ( Main/Exploration ); précédent : 006564; suivant : 006566Real-time topology modification for finite element models with haptic feedback
Auteurs : Dan C. Popescu [Australie] ; Bhautik Joshi [Australie] ; Sébastien Ourselin [Australie]Source :
- Lecture notes in computer science [ 0302-9743 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Chirurgie.
English descriptors
- KwdEn :
Abstract
We propose a real-time procedure for performing topology modifications on finite element models of objects with linear elastic behaviour. For a 3D tetrahedral model, it requires the inversion of a 6 x 6 matrix and the weighted multiplication of a thin matrix with its transpose. We exemplify with an implementation in our surgical simulator, where we impose the tight computational constraints of haptic feedback. Our experimental results show that we can obtain response times of under one second for objects represented by tetrahedral meshes with more than 2000 nodes.
Affiliations:
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Le document en format XML
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<term>Image analysis</term>
<term>Image processing</term>
<term>Inversion</term>
<term>Linear model</term>
<term>Matrix calculus</term>
<term>Modeling</term>
<term>Pattern analysis</term>
<term>Real time</term>
<term>Response time</term>
<term>Simulator</term>
<term>Surgery</term>
<term>Tactile sensitivity</term>
<term>Tetrahedral shape</term>
<term>Time response</term>
<term>Topology</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Traitement image</term>
<term>Analyse forme</term>
<term>Analyse image</term>
<term>Temps réel</term>
<term>Topologie</term>
<term>Simulateur</term>
<term>Temps réponse</term>
<term>Sensibilité tactile</term>
<term>Forme tétraédrique</term>
<term>Inversion</term>
<term>Chirurgie</term>
<term>Réponse temporelle</term>
<term>Méthode élément fini</term>
<term>Modélisation</term>
<term>Modèle linéaire</term>
<term>Calcul matriciel</term>
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<front><div type="abstract" xml:lang="en">We propose a real-time procedure for performing topology modifications on finite element models of objects with linear elastic behaviour. For a 3D tetrahedral model, it requires the inversion of a 6 x 6 matrix and the weighted multiplication of a thin matrix with its transpose. We exemplify with an implementation in our surgical simulator, where we impose the tight computational constraints of haptic feedback. Our experimental results show that we can obtain response times of under one second for objects represented by tetrahedral meshes with more than 2000 nodes.</div>
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<name sortKey="Joshi, Bhautik" sort="Joshi, Bhautik" uniqKey="Joshi B" first="Bhautik" last="Joshi">Bhautik Joshi</name>
<name sortKey="Ourselin, Sebastien" sort="Ourselin, Sebastien" uniqKey="Ourselin S" first="Sébastien" last="Ourselin">Sébastien Ourselin</name>
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