Canny边缘提取

其他

发布时间 : 2021-01-02 15:16

阅读 :

import cv2 as cv
import numpy as np
from matplotlib import pyplot as plt


def edge_demo(image):
    blurred = cv.GaussianBlur(image, (3, 3), 0)
    gray = cv.cvtColor(blurred, cv.COLOR_BGR2GRAY)
    xgrad = cv.Sobel(gray, cv.CV_16SC1, 1, 0)
    ygrad = cv.Sobel(gray, cv.CV_16SC1, 0, 1)
    # edge_output = cv.Canny(xgrad, ygrad, 50, 150)
    edge_output = cv.Canny(gray, 50, 150)
    cv.imshow('Canny Edge', edge_output)

    dst = cv.bitwise_and(image, image, mask=edge_output)
    cv.imshow('Color Edge', dst)

src = cv.imread('./lena.jpg')  # blue, green, red
cv.namedWindow('input image', cv.WINDOW_AUTOSIZE)
cv.imshow('input image', src)
edge_demo(src)
cv.waitKey(0)

cv.destroyAllWindows()

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