12_开运算与闭运算

# 开运算与闭运算

# 1. 开运算

import cv2 #opencv的缩写为cv2
import matplotlib.pyplot as plt # matplotlib库用于绘图展示
import numpy as np   # numpy数值计算工具包


# 开：先腐蚀，再膨胀
img = cv2.imread('D:/pycharm/pycharm-cope/opencv/resource/photo/05_Dige.png')

kernel = np.ones((5,5),np.uint8)
opening = cv2.morphologyEx(img,cv2.MORPH_OPEN,kernel)

cv2.imshow('opening',opening)
cv2.waitKey(0)
cv2.destroyAllWindows()

# 2. 闭运算

# 闭：先膨胀，再腐蚀
img = cv2.imread('D:/pycharm/pycharm-cope/opencv/resource/photo/05_Dige.png')

kernel = np.ones((5,5),np.uint8)
closing = cv2.morphologyEx(img,cv2.MORPH_CLOSE,kernel)

cv2.imshow('closing',closing)
cv2.waitKey(0)
cv2.destroyAllWindows()

# 3. 梯度运算

# 梯度 = 膨胀 - 腐蚀
pie = cv2.imread('D:/pycharm/pycharm-cope/opencv/resource/photo/06_pie.png')

kernel = np.ones((7,7),np.uint8)
dilate = cv2.dilate(pie,kernel,iterations=5)
erosion = cv2.erode(pie,kernel,iterations=5)

res = np.hstack((dilate,erosion))

cv2.imshow('res',res)
cv2.waitKey(0)
cv2.destroyAllWindows()

gradient = cv2.morphologyEx(pie,cv2.MORPH_GRADIENT,kernel)
cv2.imshow('gradient',gradient)
cv2.waitKey(0)
cv2.destroyAllWindows()

 结果展示