Dirichlet free-form deformations and their application to hand simulation

Presents a generalized method for free-form deformations (FFDs) that combines the traditional FFD 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 FFDs and direct FFDs. The deformation model has much potential for 3D modeling and animation. We choose to illustrate this with a non-trivial human simulation task: hand animation. We implement a multi-layer deformation model where Dirichlet FFDs (DFFDs) are used to simulate the intermediate layer between the skeleton and the skin.

[1]  Thomas W. Sederberg,et al.  Free-form deformation of solid geometric models , 1986, SIGGRAPH.

[2]  Daniel Thalmann,et al.  A Multi-sensor Approach for Grasping and 3D Interaction , 1995, Computer Graphics.

[3]  John F. Hughes,et al.  Direct manipulation of free-form deformations , 1992, SIGGRAPH.

[4]  Gerald E. Farin,et al.  Surfaces over Dirichlet tessellations , 1990, Comput. Aided Geom. Des..

[5]  M. Sambridge,et al.  Geophysical parametrization and interpolation of irregular data using natural neighbours , 1995 .

[6]  Laurent Moccozet,et al.  Virtual hand interactions with 3D world , 1997 .

[7]  Daniel Thalmann,et al.  Joint-dependent local deformations for hand animation and object grasping , 1989 .

[8]  Nadia Magnenat-Thalmann,et al.  Animation Control with Dynamics , 1989 .

[9]  John C. Davis,et al.  Contouring: A Guide to the Analysis and Display of Spatial Data , 1992 .

[10]  Daniel Thalmann,et al.  The HUMANOID Environment for Interactive Animation of Multiple Deformable Human Characters , 1995, Comput. Graph. Forum.

[11]  Daniel Thalmann,et al.  Simulation of Facial Muscle Actions Based on Rational Free Form Deformations , 1992, Comput. Graph. Forum.

[12]  H. Delingette,et al.  Simplex Based Animation , 1993 .

[13]  Daniel Thalmann,et al.  Simulation of object and human skin formations in a grasping task , 1989, SIGGRAPH.

[14]  Richard E. Parent,et al.  Layered construction for deformable animated characters , 1989, SIGGRAPH.

[15]  Dominique Bechmann.  Space deformation models survey , 1994, Comput. Graph..

[16]  Daniel Thalmann,et al.  Goal-oriented design and correction of articulated figure motion with the TRACK system , 1994, Comput. Graph..

[17]  R. Sibson.  A vector identity for the Dirichlet tessellation , 1980, Mathematical Proceedings of the Cambridge Philosophical Society.

[18]  Henry J. Lamousin,et al.  NURBS-based free-form deformations , 1994, IEEE Computer Graphics and Applications.

[19]  Tony DeRose,et al.  Composing Bézier simplexes , 1988, TOGS.

[20]  Dominique Bechmann,et al.  Continuous free form deformation , 1997, Comput. Networks ISDN Syst..

[21]  Nadia Magnenat-Thalmann,et al.  Automatic 3D cloning and real-time animation of a human face , 1997, Proceedings. Computer Animation '97 (Cat. No.97TB100120).

[22]  Sabine Coquillart,et al.  Extended free-form deformation: a sculpturing tool for 3D geometric modeling , 1990, SIGGRAPH.

[23]  Kenneth I. Joy,et al.  Free-form deformations with lattices of arbitrary topology , 1996, SIGGRAPH.