如果我没理解错你的问题，你只想要中间点，所以这个片段应该解决你的问题

import cv2

def midpoint(point1, point2):
    # values need to be rounded to an integer to avoid an error when calling cv2.circle() later
    midpoint_x = round((point2[0] + point1[0])/2)
    midpoint_y = round((point2[1] + point1[1])/2)
    midpoint = (midpoint_x, midpoint_y)
    return midpoint

img = cv2.imread('image.jpg')
    
point1 = (352, 92)
point2 = (-2.5121140e+06, 4.8845758e+02)
    
point3 = midpoint(point1, point2)

# starting with radius 10 to make the point initially more visible
img = cv2.circle(img, point3, radius=10, color=(255, 255, 255), thickness=-1)
cv2.imshow("Midpoint position", img)
cv2.waitKey()
cv2.destroyWindow("Midpoint position")