| -h | Prints usage information. | 
| -o | Output VTK polydata file name. | 
| -b | Compute object boundary contours. | 
| -f | Input file format. | 
| -g | Compute maximal gradient contours. | 
| -i | Compute iso-value contours. | 
| -l | Flip orientation (normals will be reversed). | 
| -F | Output file format. | 
| -L | Use geometry filter. | 
| -N | Allow non manifold vertices to be filtered. | 
| -U | Use unit voxel size. | 
| -m | Generate normals (if possible). | 
| -n | Geometry filter itterations. | 
| -p | Geometry filter low band value. | 
| -s | Geometry filter stop band value. | 
| -v | Contour iso-value or minimum gradient value. | 
| -w | Contour (Deriche) gradient operator width. |