app.py

from subprocess import Popen, PIPE, STDOUT, check_output
import tempfile
import gradio as gr
from PIL import Image

def run(input_image):
    output = check_output(["chmod", "a+x", "bin/detect-image"])

    with tempfile.TemporaryDirectory() as tmpdir:
        output_image_filename = tmpdir + "/result.jpg"
        cmd = 'bin/detect-image ' + input_image + ' ' + output_image_filename
        p = Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
        i = Image.open(output_image_filename)

    return p.stdout.read(), i

gr.Interface(
    fn=run,
    inputs=gr.Image(type="filepath", label="Input Image"),
    outputs=[gr.Image(type="pil"), gr.Textbox()],
).launch()