import sys
from PIL import Image, ImageEnhance, ImageOps, ImageFilter

src, outdir = sys.argv[1], sys.argv[2]
img = Image.open(src).convert('L')
w,h=img.size
for i,(y0,y1) in enumerate([(0,.10),(0,.16),(.01,.12),(0,.24)]):
    crop=img.crop((int(w*.15),int(h*y0),int(w*.85),int(h*y1)))
    crop=ImageOps.autocontrast(crop)
    crop=crop.resize((crop.width*4,crop.height*4))
    crop=ImageEnhance.Contrast(crop).enhance(2)
    crop.save(f'{outdir}/crop_{i}.png')
    bw=crop.point(lambda p: 255 if p>145 else 0)
    bw.save(f'{outdir}/crop_{i}_bw.png')