cv2.HoughCircles函数的参数的例子中:import cv2
import numpy as np
img = cv2.imread(‘19.jpg’,0)
img = cv2.medianBlur(img,5)
cimg = cv2.cvtColor(img,cv2.COLOR_GRAY2BGR)
circles = cv2.HoughCircles(img,cv2.HOUGH_GRADIENT,1,100,
param1=100,param2=30,minRadius=100,maxRadius=200)
circles = np.uint16(np.around(circles))
for i in circles[0,:]:
# draw the outer circle
cv2.circle(cimg,(i[0],i[1]),i[2],(0,255,0),2)
# draw the center of the circle
cv2.circle(cimg,(i[0],i[1]),2,(0,0,255),3)
cv2.imshow(‘detected circles’,cimg)
cv2.waitKey(0)
cv2.destroyAllWindows()
其中:img和circles变量在哪里定义的?是什么类型?有人用C#实现这个例子吗? |