其它形态操作

其他

发布时间 : 2021-01-02 15:24

阅读 :

import cv2 as cv
import numpy as np


def hat_gray_demo(image):
    gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)
    kernel = cv.getStructuringElement(cv.MORPH_RECT, (15, 15))
    dst = cv.morphologyEx(gray, cv.MORPH_TOPHAT, kernel)
    cimage = np.array(gray.shape, np.uint8)
    cimage = 100
    dst = cv.add(dst, cimage)
    cv.imshow('tophat', dst)

def hat_binary_demo(image):
    gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)
    ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINARY | cv.THRESH_OTSU)
    kernel = cv.getStructuringElement(cv.MORPH_RECT, (15, 15))
    dst = cv.morphologyEx(binary, cv.MORPH_BLACKHAT, kernel)
    cv.imshow('tophat', dst)

def gradient_demo(image):
    gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)
    ret, binary = cv.threshold(gray, 0, 255, cv.THRESH_BINARY | cv.THRESH_OTSU)
    kernel = cv.getStructuringElement(cv.MORPH_RECT, (3, 3))
    dst = cv.morphologyEx(binary, cv.MORPH_GRADIENT, kernel)
    cv.imshow('tophat', dst)

def gradient2_demo(image):
    kernel = cv.getStructuringElement(cv.MORPH_RECT, (3, 3))
    dm = cv.dilate(image, kernel)
    em = cv.erode(image, kernel)
    dst1 = cv.subtract(image, em)
    dst2 = cv.subtract(dm, image)
    cv.imshow('internal', dst1)
    cv.imshow('external', dst2)


src = cv.imread('./16.png')  # blue, green, red
cv.namedWindow('input image', cv.WINDOW_AUTOSIZE)
cv.imshow('input image', src)
gradient2_demo(src)
cv.waitKey(0)

cv.destroyAllWindows()

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