from PIL import Image
import numpy as np
im = np.array(Image.open('D:\image\coffee.jpg'))
print(im.shape,im.dtype)
b = [255, 255, 255] - im
new_im = Image.fromarray(b.astype('uint8'))
new_im.save('D:\image\coffee-new.jpg')
b = [255, 255, 255] + im
new_im = Image.fromarray(b.astype('uint8'))
new_im.save('D:\image\coffee-new-1.jpg')