Etching operation
#腐蚀操作 import cv2 import numpy as np img=cv2.imread("d:/ke.png") kernel = np.ones((3,3),np.uint8) erosion = cv2.erode(img,kernel,iterations = 1)#腐蚀操作 iterations控制腐蚀程度 erosion1 = cv2.erode(img,kernel,iterations = 2) erosion2 = cv2.erode(img,kernel,iterations = 3) res=np.hstack((img,erosion,erosion1,erosion2)) cv2.imshow('erosion', res) cv2.waitKey(0) cv2.destroyAllWindows()
Dilation
import cv2 import numpy as np img=cv2.imread("d:/ke.png") kernel=np.ones((3,3),np.uint8) img_diate=cv2.dilate(img,kernel,iterations=1) #膨胀操作 img_diate1=cv2.dilate(img,kernel,iterations=2) img_diate2=cv2.dilate(img,kernel,iterations=3) res=np.hstack((img_diate,img_diate1,img_diate2)) #水平展示 cv2.imshow("ditae",res) cv2.waitKey(0) cv2.destroyAllWindows()
Opening and closing operation
Import CV2 Import numpy AS NP IMG = cv2.imread ( " D: /ke.png " ) Kernel = np.ones ((3,3 ), np.uint8) Open = cv2.morphologyEx (IMG, cv2.MORPH_OPEN, Kernel ) # opening operation: the first etching, after expansion, Close = cv2.morphologyEx (IMG, cv2.MORPH_CLOSE, Kernel) # oFF operation: the first expansion after etching RES = np.hstack ((open, Close)) cv2.imshow ( " VS use Close Kai " , RES) cv2.waitKey (0) cv2.destroyAllWindows ()
Gradient operation
#梯度运算 import cv2 import numpy as np img=cv2.imread("d:/ke.png") kernel=np.ones((3,3),np.uint8) dilate=cv2.dilate(img,kernel,iterations=3) #膨胀 erosion=cv2.erode(img,kernel,iterations=3) #腐蚀 gradient=cv2.morphologyEx(img,cv2.MORPH_GRADIENT,kernel) #梯度 res=np.hstack((dilate,erosion,gradient)) cv2.imshow("show",res) cv2.waitKey(0) cv2.destroyAllWindows()
Hat and black hat
Hat = original input - opening operation result
Black Hat = closing operation - the original input
import cv2 import numpy as np img=cv2.imread("d:/ke.png") kernel=np.ones((3,3),np.uint8) tophar=cv2.morphologyEx(img,cv2.MORPH_TOPHAT,kernel) #礼帽 blackhar=cv2.morphologyEx(img,cv2.MORPH_BLACKHAT,kernel) #黑帽 res=np.hstack((tophar,blackhar)) cv2.imshow("hat",res) cv2.waitKey(0) cv2.destoryAllWindows()
