| background_seg | Determine the connected components of the background of given regions. |
| clip_region | Clip a region to a rectangle. |
| clip_rel_region | Clip a region relative to its size. |
| connection | Compute connected components of a region. |
| count | Rank operator for regions. |
| expand | 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. |
| junc | 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. |
| remove_noise | Remove noise from a region. |
| shape_trans | Transfor the shape of a region. |
| skeleton | Compute the skeleton of a region. |
| sort_region | Sorting of regions with respect of their relative position. |
| split_skeleton1 | Split lines represented by one pixel wide, non-branching regions. |