| checker_region | Create a checkered region. |
| circle | Create a circle. |
| ellipse | Create an ellipse. |
| empty_region | Create an empty region. |
| grid | Create a region from lines or pixels. |
| histo_to_region | Convert a histogram into a region. |
| random_region | Create a random region. |
| random_regions | Create random regions like circles, rectangles and ellipses. |
| rectangle1 | Create a rectangle parallel to the coordinate axes. |
| rectangle2 | Create a rectangle of any orientation. |
| store_chord | Create an image region from a runlength coding. |
| store_coord | Store individual pixels as image region. |
| store_filled_polygon | Store a polygon as a "filled" region. |
| store_hesse_lines | Store input lines described in Hesse normal shape as regions. |
| store_lines | Store input lines as regions (of images). |
| store_polygon | Store a polygon as an image object. |