from PIL import Image import sys import struct im = Image.open(sys.argv[1]) im = im.convert("RGB") width, height = im.size with open(sys.argv[2], 'wb') as f: for v in range(height): for u in range(width): px = im.getpixel((u, v)) r, s, _ = px value = (s << 8) | (r << 0) f.write(struct.pack("