图像多孔洞填充

import cv2;
import numpy as np;
img=cv2.imread('C:/Users/xpp/Desktop/Lena.png',cv2.IMREAD_GRAYSCALE);#原始图像
cv2.imshow('img',img)
th,im=cv2.threshold(img,160,255,cv2.THRESH_BINARY_INV);#二值化阈值处理
im_floodfill=im.copy()
h,w=im_th.shape[:2]
mask=np.zeros((h+2,w+2),np.uint8)#图像边界填充
cv2.floodFill(im_floodfill,mask,(0,0),55)#图像泛洪填充
im_floodfill_inv=cv2.bitwise_not(im_floodfill)#按位非运算
im_out=im_th|im_floodfill_inv#图像合并
cv2.imshow("Foreground",im_out)
cv2.imshow("Thresholded Image", im_th)
cv2.imshow("Floodfilled Image", im_floodfill)
cv2.imshow("Inverted Floodfilled Image", im_floodfill_inv)
cv2.waitKey(0)
cv2.destroyAllWindows()