开操作与闭操作

import cv2 as cv

def open_image(image):
    ‘图像开操作‘
    gray=cv.cvtColor(image,cv.COLOR_BGR2GRAY)
    # res=cv.bitwise_not(gray)
    #图像二值化
    ret,binary=cv.threshold(gray,0,255,cv.THRESH_BINARY | cv.THRESH_OTSU)
    cv.imshow(‘binary‘,binary)
    #获取形态学结构kernel,采用的形态学方式MORPH_RECT
    kernel=cv.getStructuringElement(cv.MORPH_RECT,(5,5))
    #图像的开操作
    binary=cv.morphologyEx(binary,cv.MORPH_OPEN,kernel)
    cv.imshow(‘open‘,binary)

def close_image(image):
    ‘图像闭操作‘
    gray=cv.cvtColor(image,cv.COLOR_BGR2GRAY)
    # res=cv.bitwise_not(gray)
    ret,binary=cv.threshold(gray,0,255,cv.THRESH_BINARY | cv.THRESH_OTSU)
    kernel=cv.getStructuringElement(cv.MORPH_RECT,(5,5))
    #操作函数morphologyEx
    binary=cv.morphologyEx(binary,cv.MORPH_CLOSE,kernel)
    cv.imshow(‘close‘,binary)

src = cv.imread("tree.jpg")
cv.imshow("原来", src)
open_image(src)
close_image(src)
cv.waitKey(0)
cv.destroyAllWindows()