如何使用Opencv python移除多个多边形

import cv2
import numpy as np

image = cv2.imread('image.jpg')

mask = np.zeros(image.shape[:2], dtype=np.uint8)

polygon1 = np.array([[100, 100], [300, 100], [200, 300]], np.int32)
polygon2 = np.array([[400, 200], [600, 200], [500, 400]], np.int32)

cv2.fillPoly(mask, [polygon1, polygon2], 255)

result = cv2.bitwise_and(image, image, mask=mask)

cv2.imshow('Result', result)
cv2.waitKey(0)
cv2.destroyAllWindows()