High-Resolution Interaction with Corotational Coarsening Models

摘要

This paper presents a numerical coarsening method for corotationalrnelasticity, which enables interactive large deformation of highresolutionrnheterogeneous objects. Our method derives a coarsernelastic model from a high-resolution discretization of corotationalrnelasticity with high-resolution boundary conditions. This is in contrastrnto previous coarsening methods, which derive a coarse elasticrnmodel from an unconstrained high-resolution discretization of regularrnlinear elasticity, and then apply corotational computations directlyrnon the coarse setting. We show that previous approaches failrnto handle high-resolution boundary conditions correctly, sufferingrnaccuracy and robustness problems. Our method, on the other hand,rnsupports efficiently accurate high-resolution boundary conditions,rnwhich are fundamental for rich interaction with high-resolution heterogeneousrnmodels. We demonstrate the potential of our method forrninteractive deformation of complex medical imaging data sets.