opencv(11)哈里斯角检测

cv.cornerHarris()用于检测标记拐角点

import numpy as np
import cv2 as cv
filename = 'images/a.png'
img = cv.imread(filename)
gray = cv.cvtColor(img, cv.COLOR_BGR2GRAY)
gray = np.float32(gray)
dst = cv.cornerHarris(gray, 2, 3, 0.04)
# result用于标记角点，并不重要
dst = cv.dilate(dst, None)
# 最佳值的阈值，它可能因图像而异。
img[dst > 0.01 * dst.max()] = [0, 0, 255]
cv.imshow('dst', img)
if cv.waitKey(0) & 0xff == 27:
    cv.destroyAllWindows()