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# -*- coding: utf-8 -*-
"""
Created on Sat Sep 22 21:18:41 2018
@author: Administrator
"""
import cv2
import numpy as np
img = cv2.imread("jiaolou.jpg")
cv2.imshow("original image",img)
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
corners = cv2.goodFeaturesToTrack(gray,50,0.05,25)
corners = np.float32(corners)
for item in corners:
x,y =item[0]
cv2.circle(img,(x,y),5,255,-1)
cv2.imshow("Top '50' features",img)
if cv2.waitKey(0) == 27:
cv2.destroyAllWindows()