The block model was provided courtesy of the Max-Planck-Institut für Informatik by the AIM@SHAPE Shape Repository. The botijo model was the provided by the Image-based 3D Models Archive, Télécom Paris. The buddha model was provided courtesy of the Visual Computing Lab of CNR-ISTI by the AIM@SHAPE Shape Repository. The elk model was provided courtesy of the Max-Planck-Institut für Informatik by the AIM@SHAPE Shape Repository. The fandisk model was provided courtesy of the Max-Planck-Institut für Informatik by the AIM@SHAPE Shape Repository. The fertility model was provided by the AIM@SHAPE Shape Repository. The rockerarm model was provided by the AIM@SHAPE Shape Repository.