我试图检测网球场上的线条。到目前为止使用了 Canny Edge 和 HoughLines 变换。
import cv2
import numpy as np
img = cv2.imread('./images/tennis.png')
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
edges = cv2.Canny(gray,50,150,apertureSize = 3)
lines = cv2.HoughLines(edges,1,np.pi/180,200)
i = 0
for line in lines:
if i < 10:
for rho,theta in line:
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(img,(x1,y1),(x2,y2),(0,0,255),2)
i += 1
cv2.imwrite('houghlines.jpg',img)
但到目前为止,结果并不是很令人满意:
输出: https ://imgur.com/t8ZBSKM
输入: https ://imgur.com/yPpObbD
关于如何改善结果的任何想法?