Rigidity Constraints for Large Mesh Deformation

It is a challenging problem ofsurface-based deformation to avoid apparent volumetric distortionsaround largely deformed areas. In this paper, we propose a new rigidityconstraint for gradient domain mesh deformation to address this problem.Intuitively the proposed constraint can be regarded as several smallcubes defined by the mesh vertices through mean value coordinates. Theuser interactively specifies the cubes in the regions which are prone tovolumetric distortions, and the rigidity constraints could make the meshbehave like a solid object during deformation. The experimental resultsdemonstrate that our constraint is intuitive, easy to use and veryeffective.