mmocr.utils¶

mmocr.utils

Image Utils ¶

`bbox2poly`	Converting a bounding box to a polygon.
`bbox_center_distance`	Calculate the distance between the center points of two bounding boxes.
`bbox_diag_distance`	Calculate the diagonal length of a bounding box (distance between the top-left and bottom-right).
`bezier2polygon`	Sample points from the boundary of a polygon enclosed by two Bezier curves, which are controlled by `bezier_points`.
`is_on_same_line`	Check if two boxes are on the same line by their y-axis coordinates.
`rescale_bboxes`	Rescale bboxes according to scale_factor.
`stitch_boxes_into_lines`	Stitch fragmented boxes of words into lines.

`point_distance`	Calculate the distance between two points.
`points_center`	Calculate the center of a set of points.

`boundary_iou`	Calculate the IOU between two boundaries.
`crop_polygon`	Crop polygon to be within a box region.
`is_poly_inside_rect`	Check if the polygon is inside the target region.
`offset_polygon`	Offset (expand/shrink) the polygon by the target distance.
`poly2bbox`	Converting a polygon to a bounding box.
`poly2shapely`	Convert a polygon to shapely.geometry.Polygon.
`poly_intersection`	Calculate the intersection area between two polygons.
`poly_iou`	Calculate the IOU between two polygons.
`poly_make_valid`	Convert a potentially invalid polygon to a valid one by eliminating self-crossing or self-touching parts.
`poly_union`	Calculate the union area between two polygons.
`polys2shapely`	Convert a nested list of boundaries to a list of Polygons.
`rescale_polygon`	Rescale a polygon according to scale_factor.
`rescale_polygons`	Rescale polygons according to scale_factor.
`shapely2poly`	Convert a nested list of boundaries to a list of Polygons.
`sort_points`	Sort arbitrary points in clockwise order in Cartesian coordinate, you may need to reverse the output sequence if you are using OpenCV’s image coordinate.
`sort_vertex`	Sort box vertices in clockwise order from left-top first.
`sort_vertex8`	Sort vertex with 8 points [x1 y1 x2 y2 x3 y3 x4 y4]

Fill holes in matrix.

`equal_len`
`is_2dlist`	check x is 2d-list([[1], []]) or 1d empty list([]).
`is_3dlist`	check x is 3d-list([[[1], []]]) or 2d empty list([[], []]) or 1d empty list([]).
`is_none_or_type`
`is_type_list`

Register all modules in mmocr into the registries.