Dirichlet Free-Form Deformation in Three-Dimensional Space

Free Form Deformations (FFDs) have been extensively applied in computer animation and geometric modeling. FFD is an important branch of deformation methods which independent of object representation. Dirichlet Free-Form Deformation (DFFD) belongs to one of the FFDs. Comparing with other FFDs, it gives deformation more flexibility and has the ability to place control points arbitrarily. DFFD has been extensively applied in two-dimensional space, but seldom in three-dimensional space. This paper studies the application of DFFD in three-dimensional space. Good deformation results have been obtained by applying DFFD to 3D head-deformation.