#!python
# -*- mode: python; Encoding: utf-8; coding: utf-8 -*-
# Last updated: <2022/06/19 21:49:33 +0900>
"""
Pillow .split() .merge() sample

Windows10 x64 21H2 + Python 3.9.13 64bit + Pillow 9.1.1
"""

from PIL import Image


def main():
    im = Image.open("mandrill.png")
    width, height = im.size
    print("%d x %d" % (width, height))

    rc, gc, bc = im.split()

    rc1 = rc.convert("1").convert("L")
    gc1 = gc.convert("1").convert("L")
    bc1 = bc.convert("1").convert("L")

    oim = Image.merge("RGB", (rc1, gc1, bc1))
    oim.show()
    oim.save("output_01split.png")


if __name__ == '__main__':
    main()