1 # Author：Winter Liu is coming! 2 import cv2 as cv 3 import numpy as np 4 import matplotlib.pyplot as plt 5 6 7 src = cv.imread(r"C:PycharmProjectsOpenCVpic ice.png") 8 cv.imshow("original", src) 9 gray = cv.cvtColor(src, cv.COLOR_BGR2GRAY) 10 gray = cv.GaussianBlur(gray, (3, 3), 0) 11 ret, thresh = cv.threshold(gray, 50, 255, cv.THRESH_BINARY) 12 contours, hierarchy = cv.findContours(thresh, cv.RETR_EXTERNAL, cv.CHAIN_APPROX_SIMPLE) 13 copy_img = src.copy() 14 cv.drawContours(copy_img, contours, -1, (255, 0, 0), 2) 15 cv.imshow("contours", copy_img) 16 print(len(contours)) 17 18 cv.waitKey(0) 19 cv.destroyAllWindows()
