core.services.utils.annotations

annotations

Functions:

Name	Description
mask_to_polygons	Convert a binary segmentation mask into a list of polygons.

mask_to_polygons(mask)

Convert a binary segmentation mask into a list of polygons.

This function extracts the external contours from a 2D binary mask and converts them into polygon representations. Each polygon is a NumPy array of (x, y) coordinates. Contours with fewer than 3 points are discarded to ensure valid polygon shapes.

Parameters:

Name	Type	Description	Default
mask	ndarray	A 2D NumPy array representing the binary mask, where non-zero pixels indicate the segmented region.	required

Returns:

Type	Description
list[ndarray]	list[np.ndarray]: A list of polygons extracted from the mask. Each polygon is a NumPy array of shape (N, 2) with integer coordinates, where N is the number of points in the polygon.