from PIL import Image
import numpy as np

img = Image.open("image.png")
imgArray = np.array(img)
c = 1

for x in range(4):
    for y in range(4):
        im2 = img.crop( (146*x,146*y,146*x+145,146*y+145) )
        if (c != 16):
            im2.save(f'{c}.png')
        c += 1