240725 显示棱角点

harris
# -*- coding: utf-8 -*-
 import sysimport cv2
 import numpy as np# 加载图像
 input_file = 'box.png'#sys.argv[1]
 img = cv2.imread(input_file)
 cv2.imshow('Input image', img)img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
 img_gray = np.float32(img_gray)# Harris 角点检测
 img_harris = cv2.cornerHarris(img_gray, 7, 5, 0.04)# 放大图像
 img_harris = cv2.dilate(img_harris, None)# 显示棱角
 img[img_harris > 0.01 * img_harris.max()] = [0, 0, 0]cv2.imshow('Harris Corners', img)
 cv2.waitKey()