filename : koch02.pdf entry : inproceedings pages : 10 year : 2002 title : A Framework for Facial Surgery Simulation author : R. M. Koch, S. H. M. Roth, M. H. Gross, A. P. Zimmermann, H. F. Sailer booktitle : ACM SCCG 2002 Proceedings editor : publisher : language : English month : April keywords : Finite Element Method, Facial Surgery Simulation, Facial Modeling, Data Reconstruction. 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.