Improved subdivision over arbitrary topological meshes

The shape of the subdivision surface and the final object model are determined by the initial control mesh given when improving arbitrary topological meshes to construct smooth meshes,it’s unadjustable.So,control parameters and perturbation is presented during the mesh subdivision.Because of the parameter,the subdivision over arbitrary topological meshes is under control by changing the parameter.Kinds of subdivision surfaces can be created.The shape of the meshes can be locally adjusted using perturbation which is developed to modify the spatial positions some examples of the subdivision surfaces given demonstrate the simpleness,flexibility and efficiency of the algorithm