text: import cv2 as cv
  
  img = cv.imread("maliao.jpg", cv.IMREAD_UNCHANGED)
  
  # 拆分通道
  b, g, r = cv.split(img)
  
  # 合并图像通道
  m = cv.merge([b, g, r])
  
  cv.imshow('merge', m)
  
  # 等待显示
  cv.waitKey(0)
  cv.destroyAllWindows()