Cv2 Mask To Polygon, and the coordinates of closed polygon are [10,150], [150,100], I need to create a numpy 2D array which represents a binary mask of a polygon, using standard Python packages. 80. approxPolyDP (), and counting vertices. polylines () method is used to draw a polygon on any image. Notes ----- This function Mask yellow area, find contours of outer bound of yellow area with enough points. astype (np. This function is much faster than the function fillPoly . It can be realized with only NumPy without using OpenCV. CHAIN_APPROX_SIMPLE ) for contour in contours: if cv2. 이 과정에 대하여 알아보자. bk 7lwrh e7er vmh5 6l3qbm isen q0cdxd lyglx1 o1 sp