python点击图片显示位置和rgb

import cv2, sys

im=cv2.imread(sys.argv[1])

def getInfo(event, x,y,flags,param):
  if event == cv2.EVENT_LBUTTONDOWN:
    print x,y #im[y,x]
    
cv2.imshow('image',im)
cv2.setMouseCallback("image",getInfo)
cv2.waitKey(0)