python opencv 키 입력 확인하기

import cv2
img = cv2.imread('./data/rect.jpg') # load a dummy imagesd
while(1):
    cv2.imshow('img',img)
    k = cv2.waitKeyEx(0)
    if k==27:    # Esc key to stop 
        break
    elif k==-1:  # normally -1 returned,so don't print it
        continue
    else:
        print (k) # else print its value

 

 

waitKeyEx()에서 방향키 입력 받기

key == 0xFF53: # 65363 오른쪽
    
key == 0xFF54: # 65364 아래
    
key == 0xFF51:  # 65361 왼쪽
    
key == 0xFF52: # 65362 위