imgcat.py

#!/usr/bin/env python3

import sys
import math
import shutil

from PIL import Image


def doublepixel(c1, c2):
    return f"\x1b[48;2;{c2[0]};{c2[1]};{c2[2]}m\x1b[38;2;{c1[0]};{c1[1]};{c1[2]}m▀\x1b[0m"

def pixel(c):
    return f"\x1b[38;2;{c[0]};{c[1]};{c[2]}m██\x1b[0m"


def main():

    try:
        img = Image.open(sys.argv[1]).convert("RGB")
    except:
        print("cannot open image")
        return 1

    cols, rows = shutil.get_terminal_size()
    rows = int((rows-1)/2)

    osize = img.size

    basewidth = cols
    wpercent = (basewidth/float(img.size[0]))
    hsize = int((float(img.size[1])*float(wpercent)))
    img = img.resize((basewidth,hsize), Image.ANTIALIAS)

    pix = img.load()

    out = ""
    for v in range(0, img.height, 2):
        for h in range(0, img.width):
            px = list(pix[h,v])
            try:
                px1 = list(pix[h,v+1])
            except:
                px1=[0,0,0]
            out += doublepixel(px, px1)

        out+="\n"

    print(out)

    print(f"cols={cols} rows={rows} img_o={osize[0]}x{osize[1]} img_rsc={img.width}x{img.height}, ratio={wpercent}")


if __name__ == '__main__':
    main()