Python代码库OpenCV之09线检测line detection（含代码）
代码
import cv2
import numpy as np
filename="D:\\pythondev\\dev\\opencv\\img\\tu.png"
image = cv2.imread(filename)
gray = cv2.cvtColor(image,cv2.COLOR_BGR2GRAY)
edges = cv2.Canny(gray,100,170,apertureSize =3 )
lines = cv2.HoughLines(edges,1,np.pi/180,240)
for rho,theta in lines[0]:
a = np.cos(theta)
b = np.sin(theta)
x0 = a *rho
y0 = b*rho
x1 = int(x0 + 1000 * (-b))
y1 = int(y0 + 1000 * (a))
x2 = int(x0 - 1000*(-b))
y2 = int(y0 - 1000*(a))
cv2.line(image,(x1,y1),(x2,y2),(255,0,0),2)
cv2.imshow("Hough Lines",image)
cv2.waitKey(0)
cv2.destroyAllWindows()
效果
image.png
