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852天前import cv2 |
import numpy as np |
def process(img): |
img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) |
img_blur = cv2.GaussianBlur(img_gray, (3, 3), 2) |
img_canny = cv2.Canny(img_blur, 50, 9) |
img_dilate = cv2.dilate(img_canny, np.ones((4, 2)), iterations=11) |
img_erode = cv2.erode(img_dilate, np.ones((13, 7)), iterations=4) |
return cv2.bitwise_not(img_erode) |
def get_contours(img): |
contours, _ = cv2.findContours(process(img), cv2.RETR_TREE, cv2.CHAIN_APPROX_NONE) |
cnt = max(contours, key=cv2.contourArea) |
cv2.drawContours(img, [cv2.convexHull(cnt)], -1, (0, 0, 255), 2) |
img = cv2.imread("image2.png") |
get_contours(img) |
cv2.imshow("result", img) |
cv2.waitKey(0) |
cv2.destroyAllWindows() |
