Python opencv 鼠标点击图片，返回坐标

import cv2 img = cv2.imread(’./data/cat.png’)

def on_EVENT_LBUTTONDOWN(event, x, y, flags, param): if event == cv2.EVENT_LBUTTONDOWN: xy = “%d,%d” % (x, y) print(‘x, y = {}, {}’.format(x, y)) cv2.circle(img, (x, y), 1, (255, 0, 0), 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”) loc = cv2.setMouseCallback(“image”, on_EVENT_LBUTTONDOWN) cv2.imshow(“image”, img) cv2.waitKey(0)