A framework for facial surgery simulation
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Date
1999-06-18
Publication Type
Report
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yes
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Abstract
The accurate prediction of the post-surgical facial shape is of paramount importance for surgical planning in facial surgery. In this paper we present a framework for facial surgery simulation which is based on volumetric finite element modeling. We contrast conventional procedures for surgical planning against our system by accompanying a patient during the entire process of planning, medical treatment and simulation. In various preprocessing steps a 3D physically based facial model is reconstructed from CT and laser range scans. All geometric and topological changes are modeled interactively using Alias.™ Applying fully 3D volumetric elasticity allows us to represent important volumetric effects such as incompressibility in a natural and physically accurate way. For computational efficiency, we devised a novel set of prismatic shape functions featuring a globally C1-continuous surface in combination with a C0 interior. Not only is it numerically accurate, but this construction enables us to compute smooth and visually appealing facial shapes. An extended evaluation and quantitative analysis of a clinical test series with several female and male patients clearly demonstrates the performance of our framework.
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published
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Journal / series
Volume
326
Pages / Article No.
Publisher
ETH Zurich, Department of Computer Science
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Subject
Data Reconstruction; Finite Element Method; Facial Modeling; Facial Surgery Simulation
Organisational unit
02150 - Dep. Informatik / Dep. of Computer Science