Editing arbitrarily deforming surface animations

Editing, Streaming and Playing of MPEG-4 Facial Animations

Edge cracks in plastically deforming surface grains

A selection of surface crack problems is presented to provide insights into Stage I and early Stage II fatigue crack growth. Edge cracks at 45o and 90o to the surface are considered for cracks growing in single crystals. Both single crystal slip and conventional plasticity are employed as constitutive models. Edge cracks at 45o to the surface are considered that either (i) kink in the direction...

Deforming Surface Simplification Based on Feature Preservation

In computer graphics, methods for mesh simplification are common. However, most of them focus on static meshes, only few works have been proposed for simplifying deforming surfaces. In this paper, we propose a new method for the multiresolution representation of time-varying meshes based on deformation area and feature preservation. Our method uses the famous QEM (quadric error metric) as our b...

Deforming Surface Features Lines in Intrinsic Coordinates

Significant local structure of terrain surfaces can be described by structural lines which are connected sets of points where the surface is approximately cylindrical, i.e., the ratio of the principal curvatures is large. At each point curvature is maximal in the curvature direction associated with the curvature with larger absolute value. These lines form the skeleton of the surface for constr...

Layer-Based Surface Editing

By decomposing a surface into a sequence of levels with different frequency bands, users can manipulate and modify specified levels without affecting others. This idea has been extensively explored with various multi-resolution techniques [KVS99, GSS99]. However, encoding details as local frame displacements, as widely done in multi-resolution techniques, causes two major problems. First, the i...