Click image 1 time, get position and destroy window OpenCv

问题

Is there a simple way to open an image using OpenCv, and keep it open until it is clicked, then return the pixel coordinate and destroy the image, almost like using WaitKey() just with a return, and click as trigger?

回答1:

This should do what you want:

#!/usr/bin/env python3

import cv2
import numpy as np

def onClick(event,x,y,flags,param):
    """Called whenever user left clicks"""
    global Running
    if event == cv2.EVENT_LBUTTONDOWN:
        print(f'I saw you click at {x},{y}')
        Running = False

# Create window
wname = "Funky Image"
cv2.namedWindow(winname=wname)
cv2.setMouseCallback(wname, onClick)

# Load an image
img = cv2.imread('image.jpg')

Running = True
while Running:

    cv2.imshow(wname,img)
    cv2.waitKey(1)

cv2.destroyAllWindows

来源：https://stackoverflow.com/questions/61275955/click-image-1-time-get-position-and-destroy-window-opencv