Opencv learning Day5

Psychology - Corrosion operation

import cv2
import numpy as np

img = cv2.imread('qing.jpg')
cv2.imshow('img',img)

kernel = np.ones((5, 5),np.uint8)# Determine the scope of each corrosion 
erosion = cv2.erode(img,kernel,iterations = 1)#iterations For the number of iterations , More iterations , The deeper the corrosion 
cv2.imshow('erosion', erosion)


cv2.waitKey(0)
cv2.destroyAllWindows()

Change the number of iterations

import cv2
import numpy as np

img = cv2.imread('qing.jpg')
cv2.imshow('img',img)

kernel = np.ones((5, 5),np.uint8)# Determine the scope of each corrosion 
erosion = cv2.erode(img,kernel,iterations = 3)#iterations For the number of iterations , More iterations , The deeper the corrosion 
cv2.imshow('erosion', erosion)


cv2.waitKey(0)
cv2.destroyAllWindows()

Change corrosion range

import cv2
import numpy as np

img = cv2.imread('qing.jpg')
cv2.imshow('img',img)

kernel = np.ones((9, 9),np.uint8)# Determine the scope of each corrosion 
erosion = cv2.erode(img,kernel,iterations = 1)#iterations For the number of iterations , More iterations , The deeper the corrosion 
cv2.imshow('erosion', erosion)


cv2.waitKey(0)
cv2.destroyAllWindows()

Expansion operation

import cv2
import numpy as np

img = cv2.imread('qing.jpg')
cv2.imshow('img',img)

kernel = np.ones((9, 9),np.uint8)# Determine the scope of each corrosion 
erosion = cv2.erode(img,kernel,iterations = 1)#iterations For the number of iterations , More iterations , The deeper the corrosion 
cv2.imshow('erosion', erosion)

kernel = np.ones((9, 9),np.uint8)# Determine the scope of each corrosion 
dilate = cv2.dilate(erosion,kernel,iterations = 1)#iterations For the number of iterations , More iterations , The deeper the corrosion 
cv2.imshow('dilate', dilate)
cv2.waitKey(0)
cv2.destroyAllWindows()

Expansion operation and corrosion operation are mutually inverse