text: import cv2
  import numpy as np
  
  # 기본 값 옵션
  img = cv2.imread('../img/opencv_logo.png')   
  # IMREAD_COLOR 옵션                   
  bgr = cv2.imread('../img/opencv_logo.png', cv2.IMREAD_COLOR)    
  # IMREAD_UNCHANGED 옵션
  bgra = cv2.imread('../img/opencv_logo.png', cv2.IMREAD_UNCHANGED) 
  # 각 옵션에 따른 이미지 shape
  print("default", img.shape, "color", bgr.shape, "unchanged", bgra.shape) 
  
  cv2.imshow('bgr', bgr)
  cv2.imshow('bgra', bgra)
  cv2.imshow('alpha', bgra[:,:,3])  # 알파 채널만 표시
  cv2.waitKey(0)
  cv2.destroyAllWindows()