Dirichlet Free-Form Deformations and their Application to Hand Simulation

Moccozet, L. and Magnenat-Thalmann, N.

Abstract: We present a generalized method for free-form deformations that combines the traditional freeform deformation model with techniques of scattered data interpolation based on Delaunay and Dirichlet/Voronoi diagrams. This technique offers many advantages over traditional FFDs, including simple control of local deformations. It also keeps all the capabilities of FFD extensions, such as extended free-form deformations and direct FFDs. The deformation model has much potential for 3D modeling and animation. We choose to illustrate this with a nontrivial human simulation task: hand animation. We implement a multi-layer deformation model where DFFDs are used to simulate the intermediate layer between the skeleton and the skin.

  booktitle = {Proc. Computer Animation '97},
  author = {Moccozet, L. and Magnenat-Thalmann, N.},
  title = {Dirichlet Free-Form Deformations and their Application to Hand Simulation},
  publisher = {IEEE Publisher},
  pages = {93-102},
  year = {1997},
  topic = {Modelling techniques}