Display images in Raspbian console (https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=262615)

con_show

#!/bin/bash
fb="fb0"
vir_siz="/sys/class/graphics/$fb/virtual_size"

size=`stty size < /dev/tty`

echo -ne "\033[6n" < /dev/tty
read -s -d\[ garbage < /dev/tty
read -s -d R pos < /dev/tty

python3 <(cat <<EOF
'''draw image in Raspbian console'''
import sys
from PIL import Image

def to_bgr(img):
    '''.convert('BGR') does not work for RGB workaround'''
    rgb_bytes = img.convert('RGB').tobytes()
    return Image.frombytes('RGB', img.size, rgb_bytes, 'raw', 'BGR')

def con_show(fhandle):
    '''refresh framebuffer, with image drawn below current command line'''

    drows, dcols = '$size'.rstrip().split()
    drows, dcols = int(drows), int(dcols)

    rpos = int('$pos'.split(';')[0])

    right, bottom = open('$vir_siz', 'r').read().rstrip().split(',')
    right, bottom = int(right), int(bottom)

    fheight = int(int(bottom) / int(drows))
    img = Image.open(fhandle)

    irows = int((img.size[1] - 1) / fheight + 1)
    if irows > drows - 2:
        irows = drows - 2
    if rpos + irows > drows:
        irows = drows - rpos
    if irows < 1:
        print('\r          \r', end='')
        sys.exit()
    iheight = irows * fheight

    for prime in [13, 11, 7, 5, 3, 2]:
        if dcols % prime != 0:
            fill = 'abcdefghijklm'[:prime]
            break

    print('\r\033[5m', end='')
    print((fill * (int(irows * dcols / prime) + 1))[:irows * dcols], end='')
    print('\033[0m')
    sys.stdout.flush()

    img0 = Image.new('RGBA', [right, iheight])
    img0.paste(to_bgr(img))

    fbuf = open('/dev/$fb', 'wb')
    fbuf.seek((rpos - 1) * fheight * right * 4)
    fbuf.write(img0.tobytes())


FROM_STDIN = len(sys.argv) == 1 or sys.argv[1] == '-'
con_show(sys.stdin.buffer if FROM_STDIN else open(sys.argv[1], 'rb'))
EOF
) \
$1