paralleldomain.model.annotation.polygon_2d

class Polygon2D(lines, class_id, instance_id=-1, attributes=<factory>)

A closed polygon made up of a collection of 2D Lines.

Parameters:

• lines (List[Line2DBaseGeometry[TypeVar(T, int, float)]]) – Polygon2D.lines

• class_id (int) – Polygon2D.class_id

• instance_id (int) – Polygon2D.instance_id

• attributes (Dict[str, Any]) – Polygon2D.attributes

lines

Ordered list of Line2D instances

class_id

Class ID of the polygon. Can be used to lookup more details in ClassMap.

instance_id

Instance ID of annotated object. Can be used to cross-reference with other instance annotation types, e.g., InstanceSegmentation2D or InstanceSegmentation3D. If unknown defaults to -1.

attributes

Dictionary of arbitrary object attributes.

to_numpy()

Returns all ordered vertices as a numpy array of shape (N x 2).

property length

Returns the length of the line.

class Polygons2D(polygons)

Collection of 2D Polygons

Parameters:

polygons (List[Polygon2D]) – Polygons2D.polygons

polygons

Ordered list of Polygon2D instances