OpenCV: opening operation of the operational image

Guide package:

import numpy as np
import cv2
import matplotlib.pyplot as plt
def show(image):
    plt.imshow(image)
    plt.axis('off')
    plt.show()
def imread(image):
    image=cv2.imread(image)
    image=cv2.cvtColor(image,cv2.COLOR_BGR2RGB)
    return image

Open computing code:

kernel=cv2.getStructuringElement(cv2.MORPH_RECT,(10,10))
opening=cv2.morphologyEx(image,cv2.MORPH_OPEN,kernel)
show(opening)

Closing operation codes: # closing operation following the start, and then etching after expansion, for removing black spots

kernel=cv2.getStructuringElement(cv2.MORPH_RECT,(10,10))
opening=cv2.morphologyEx(image,cv2.MORPH_OPEN,kernel)
show(opening)