This is my code to detect the lane boundaries. But only one line(left most) is detected here. Is there a way to remove other objects from the picture (remove bushes and trees) and detect only the straight line?

import cv2
import numpy as np

img = cv2.imread('lane.jpeg')
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
edges = cv2.Canny(gray,50,150,apertureSize = 3)

lines = cv2.HoughLines(edges,1,np.pi/180,200)
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))



enter image description here


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