| ::background_seg | Determine the connected components of the background of given regions. |
| ::clip_region | Clip a region to a rectangle. |
| ::clip_region_rel | Clip a region relative to its size. |
| ::connection | Compute connected components of a region. |
| ::crop_domain_rel | Cut out an image area relative to the domain. |
| ::eliminate_runs | Eliminate runs of a given length. |
| ::expand_region | Fill gaps between regions or split overlapping regions. |
| ::fill_up | Fill up holes in regions. |
| ::fill_up_shape | Fill up holes in regions having given shape features. |
| ::hamming_change_region | Generate a region having a given Hamming distance. |
| ::interjacent | Partition the image plane using given regions. |
| ::junctions_skeleton | Find junctions and end points in a skeleton. |
| ::partition_dynamic | Partition a region horizontally into rectangles. |
| ::partition_rectangle | Partition a region into rectangles of equal size. |
| ::rank_region | Rank operator for regions. |
| ::remove_noise_region | Remove noise from a region. |
| ::shape_trans | Transform the shape of a region. |
| ::skeleton | Compute the skeleton of a region. |
| ::sort_region | Sorting of regions with respect to their relative position. |
| ::split_skeleton_lines | Split lines represented by one pixel wide, non-branching lines. |
| ::split_skeleton_region | Split lines represented by one pixel wide, non-branching regions. |