Usage: sym in.pgm type out.pgm
Description: Symmetry (vertical, horizontal, central in 2D; x, y, z in 3D). The parameter type is set to v or y (vertical), h or x (horizontal), or c (central) for 2D images, or to x, y or z for 3D images.
Types supported: byte 2d, byte 3d.
Category: geo