Physically Based Rigging for Deformable Characters

How to read this

Category

Method: physically based rigging for deformable characters

Contributions

• A framework where an elastic volumetric body model is driven by the animator's skeleton
• Skeletal motion induces physically plausible deformation and secondary dynamics via a linear elasticity solve
• Supports effects such as muscle bulging and jiggle without per-pose sculpting, combining skeletal controllability with elasticity-based realism

Context

Builds directly on the authors' skeleton-driven dynamic deformation work (Capell et al., Interactive Skeleton-Driven Dynamic Deformations), adding a physically based, elasticity-driven rigging layer.Builds on: Interactive Skeleton-Driven Dynamic Deformations

Correctness

Realism comes from linear elasticity, which is accurate for moderate deformation but can be less faithful under large or highly nonlinear deformation; results show plausible secondary motion rather than ground-truth-validated tissue behavior.

Clarity

Accessible to readers with basic FEM/elasticity background; a first pass conveys the skeleton-drives-elastic-body idea, a second pass clarifies the elasticity solve and coupling.

How to read it

First pass for the rigging concept and the controllability-versus-realism tradeoff; second pass on the linear elasticity formulation if you implement physically based secondary motion.