| combine_roads_xld | Combine road hypotheses from two resolution levels. |
| cont_info_xld | Return XLD contour parameters. |
| cont_len_xld | Return the number of points in an XLD contour. |
| defined_attribs_xld | Return the names of the defined attributes of an XLD contour. |
| disp_xld | Display an XLD object. |
| fetch_angle_xld | Calculate the direction of an XLD contour for each contour point. |
| gen_contour2_xld | Convert a region into XLD contours. |
| gen_contour_xld | Convert a region into XLD contours. |
| get_cont_attrib_xld | Return point attribute values of an XLD contour. |
| get_contour_xld | Return the coordinates of an XLD contour. |
| get_lines_xld | Return an XLD polygon's data (as lines). |
| get_poly_parallel_xld | Return an XLD parallel's data (as lines). |
| get_poly_xld | Return an XLD polygon's data. |
| info_para_xld | Return information on the gray values of the area enclosed by XLD parallels. |
| local_max_cont_xld | Select XLD contours with a local maximum of gray values. |
| max_parallels_xld | Join modified XLD parallels lying on the same polygon. |
| mod_para_xld | Extract parallel XLD polygons enclosing a homogeneous area. |
| parallels_xld | Extract parallel XLD polygons. |
| poly_xld | Approximate XLD contours by polygons. |
| regress_cont_xld | Calculate the parameters of a regression line to an XLD contour. |
| scale_cont_xld | Scale an XLD contour. |
| select_cont_xld | Select XLD contours according to several features. |
| smooth_cont_xld | Smooth an XLD contour. |
| split_cont_xld | Split XLD contours at dominant points. |
| union_cont_xld | Merger neighboring XLD contours having a similar direction. |