Interactive Skeleton-Driven Dynamic Deformations

How to read this

Category

Method: skeleton-driven physically based deformation

Contributions

• Skeleton-driven dynamic deformation, where a control lattice over a volumetric character is deformed by a linear elasticity solve driven by the animator's skeleton
• Physically based, interactively controllable secondary motion as an alternative to purely geometric skinning
• A multiresolution basis that keeps the elasticity simulation fast enough for interactive use

Context

Builds on Terzopoulos et al.'s elastically deformable models, coupling that elasticity framework to an animator's skeleton for controllable secondary motion.Builds on: Elastically Deformable Models

Correctness

Uses a linear elasticity model on a control lattice, validated by interactive deformation results; reader caveat is that linear elasticity is an approximation that can be less accurate under large strains, and quality depends on the lattice resolution and multiresolution basis.

Clarity

Moderately accessible; a first pass conveys the skeleton-plus-elasticity concept, a second pass is needed for the multiresolution solve.

How to read it

Focus on how the skeleton drives the elasticity solve and what the multiresolution basis buys; do a second pass on the linear-elasticity formulation if you implement interactive secondary motion.