n  )    Denormalize an image array to [0,1].  get_crop_region  < source > ( mask_image: Image width: int height: int pad = 0  ) → tuple  Parameters   mask_image (PIL.Image.Image) — Mask image.   width (int) — Width of the image to be processed.   height (int) — Height of the image to be processed.   pad (int, optional) — Padding to be added to the crop region. Defaults to 0.   Returns 
tuple
  
(x1, y1, x2, y2) represent a rectangular region th