code: def crop(img, start_y, start_x, h, w):
      
      return img[start_y:start_y + h, start_x:start_x + w, :].copy()
docs: Crop an image given the top left corner.
      :param img: The image
      :param start_y: The top left corner y coord
      :param start_x: The top left corner x coord
      :param h: The result height
      :param w: The result width
      :return: The cropped image.