Space-time Editing of 3D Video Sequences

A shape constrained Laplacian mesh deformation approach is introduced for interactive editing of mesh sequences. This allows low-level constraints, such as foot or hand contact, to be imposed while preserving the natural dynamics of the captured surface. The approach also allows artistic manipulation of motion style to achieve effects such as squash-and-stretch. Interactive editing of key-frames is followed by automatic temporal propagation over a window of frames. User edits are seamlessly integrated into the captured mesh sequence. Three spatio-temporal interpolation methods are evaluated. Results on a variety of real and synthetic sequences demonstrate that the approach enables flexible manipulation of captured 3D video sequences.