Efficient Animation of MeshGrid Models, using a Skin & Bone System
ALEXANDRU SALOMIE, A.I. Gavrilescu, Rudi Deklerck, Ilse Ravyse, Jan P. Cornelis, Marius Preda · 2002
In this paper we describe a MPEG-4 AFX compliant Skin&Bone based animation technique applied on a novel surface representation method, called MESHGRID, which is characterized by a connectivity-description defined in terms of a regular 3D grid of points, i.e. the reference-grid. The approach is based on deforming the regular reference-grid in order to obtain the animation of the vertices of the surface attached to this referencegrid. The MESHGRID representation used in the experiments is a humanoid model built from implicit surfaces: e.g. blobs, cylinders, cones, ellipsoids, etc. The flexibility and efficiency of the MESHGRID representation for animation purposes relies upon the reduced number of vertices that are described in the animation script and the hierarchical nature of the representation. Moreover, it is more intuitive to design the animation in terms of the regular reference-grid than to interact directly with the vertices.