Mesh Deformation Clone Based on Local Affine Transform

The paper proposes a novel method to clone the deformation of a source mesh onto a target mesh while minimizing the distortion of the target mesh. Users can specify a small set of vertex pairs－ called marked vertex pairs－to identify the corresponding vertices between source and target mesh. The source vertices in the marked vertex pairs will be transformed to their counterparts in the target mesh.By using these transforms,the system computes the affine transforms for the rest of the mesh vertices on the target mesh locally based on the shape similarities.After deformation transforms for all the vertices of the target mesh are calculated,a smoothing operation is applied to the deformation result. The smoothing operation solves a constrained optimization problem based on some objective functions.A prototype system has been developed,and examples demonstrate that our system can easily create complex animations for new digital characters,and that our method can also be easily extended to unstructured data.