python获取图像坐标点

import cv2import numpy as np#144621、142832、142836、142744、142739、142733、145448、# 图片路径img = cv2.imread('./data/data/img/RK03AA8U142922_01_145435_ok.jpg')a = []b = []def on_EVENT_LBUTTONDOWN(event, x, y, flags, param):if event == cv2.EVENT_LBUTTONDOWN:xy = "%d,%d" % (x, y)a.append(x)b.append(y)cv2.circle(img, (x, y), 1, (0, 0, 255), thickness=-1)cv2.putText(img, xy, (x, y), cv2.FONT_HERSHEY_PLAIN,1.0, (0, 0, 0), thickness=1)cv2.imshow("image", img)cv2.namedWindow("image")cv2.setMouseCallback("image", on_EVENT_LBUTTONDOWN)cv2.imshow("image", img)cv2.waitKey(0)print(a[0], b[0])