mouseEvent.py

import numpy as np
import cv2

#events= [i for i in dir(cv2) if 'EVENT' in i]
#print(events)

def click_event(event,x,y,flags,param):
    if event==cv2.EVENT_LBUTTONDOWN:
        print(x, ' , ',y)
        font=cv2.FONT_HERSHEY_SIMPLEX
        strXY=str(x)+' , '+str(y)
        cv2.putText(img,strXY,(x,y),font,0.5,(255,255,0),2)
        cv2.imshow('image',img)
    
    if event==cv2.EVENT_RBUTTONDOWN:
        blue=img[y,x,0]
        green=img[y,x,1]
        red=img[y,x,2]
        font=cv2.FONT_HERSHEY_SIMPLEX
        strBGR=str(blue)+' , '+str(green)+' , '+str(red)
        cv2.putText(img,strBGR,(x,y),font,0.5,(0,255,0),2)
        cv2.imshow('image',img)


#img=np.zeros([512,512,3],np.uint8)# FOR BLACK IMAGE
img=cv2.imread('image_1.png')
cv2.imshow('image',img)

cv2.setMouseCallback('image',click_event)# frame window name should be same everywhere

cv2.waitKey(0)
cv2.destroyAllWindows()