摘要：005-特征提取算法-Harris-检测角点
概述
角点：三维图像亮度变化剧烈的点或者图像边缘曲线上曲率极大值的点
使用cornerHarris来识别角点
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import cv2
import numpy as np
def a(imgPath):
img = cv2.imread(imgPath)
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
gray = np.float32(gray)
dst = cv2.cornerHarris(gray,2,3,0.04)
dst = cv2.dilate(dst,None)
img[dst>0.01 * dst.max()] = [0,0,255]
cv2.imshow('corners',img)
cv2.imwrite('corners.png',img)
if cv2.waitKey(0) & 0xff == 27:
cv2.destroyALLWindows()
if __name__ == "__main__":
print ('---------检测角点------------')
a("/Users/lihongxu6/IdeaProjectsGit/python-algorithm/tests/feature/a.jpg")
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