如何在python中显示只有边框的图像上的对象覆盖？

import cv2
import numpy as np

image = cv2.imread('image.jpg')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

edges = cv2.Canny(gray, 50, 150)

dilated = cv2.dilate(edges, None, iterations=2)

contours, _ = cv2.findContours(dilated.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)

cv2.drawContours(image, contours, -1, (0, 255, 0), 2)

cv2.imshow('Object Overlay', image)
cv2.waitKey(0)
cv2.destroyAllWindows()