| angle_ll | Calculate the angle between two lines. |
| angle_lx | Calculate the angle between one line and the vertical axis. |
| distance_cc | Calculate the distance between two contours. |
| distance_cc_min | Calculate the minimum distance between two contours. |
| distance_lc | Calculate the distance between a line and one contour. |
| distance_lr | Calculate the distance between a line and a region. |
| distance_pc | Calculate the distance between a point and one contour. |
| distance_pl | Calculate the distance between one point and one line. |
| distance_pp | Calculate the distance between two points. |
| distance_pr | Calculate the distance between a point and a region. |
| distance_ps | Calculate the distances between a point and a line segment. |
| distance_rr_min | Minimum distance between the contour pixels of two regions each. |
| distance_rr_min_dil | Minimum distance between two regions with the help of dilatation. |
| distance_sc | Calculate the distance between a line segment and one contour. |
| distance_sl | Calculate the distances between a line segment and a line. |
| distance_sr | Calculate the distance between a line segment and one region. |
| distance_ss | Calculate the distances between two line segments. |
| get_points_ellipse | Calculate a point of an ellipse corresponding to a specific angle. |
| intersection_ll | Calculate the intersection point of two lines. |
| projection_pl | Calculate the projection of a point onto a line. |