| 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. |
| distance_transform | Compute the distance transformation of a region. |
| 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. |
| merge_regions_line_scan | Merge regions from line scan images. |
| 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. |