A new optimization approach for mass-spring models parameterization

Abstract

Mass-spring models (MSM) are frequently used to model deformable objects for computer graphics applications due to their simplicity and computational efficiency. However, the model parameters are not related to the constitutive laws of elastic material in an obvious way. The MSM parameters computation from a model based on continuum mechanics is a possibility to address this problem. Therefore, in this paper we propose a new method to derive MSM parameters using a data-driven strategy with a new objective function based on the model acceleration so that the MSM and the reference model behave similarly. The proposed methodology does not depend on reference model, mesh topology or static equilibrium configuration. We validate the methodology for deriving MSM systems using finite element method (FEM) and MSM itself as reference models. The obtained results are compared with related works. We also discuss its robustness against different discretizations and material properties.