Reset the voxel sizes of the input 3D object
      writing the new object to standard output.
      This is required until the 3D objects are converted to
      WLZ_TRANS_OBJ type. If a voxel size is not defined then
      the original size is retained
      Options are:
      -x#       x voxel size
      -y#       y voxel size
      -z#       z voxel size
      -h       help - prints this usage message
      -v       verbose operation