Polygon interior points (polygon belongs to certain class)

[petoor]

Hi.

Given an image like the following.

imantics.Mask(img).polygons() generates the resulting 7 polygons. However, is there a way to also denote which class the polygons belong to? That is, if the border of the polygon goes from black to white, let the class be 0, if the border goes from white to black, let the class be 1, or something along those lines.

Best regards.

[petoor]

Turns out cv does exactly that : https://docs.opencv.org/4.2.0/d9/d8b/tutorial_py_contours_hierarchy.html