app.py

import gradio as gr
import cv2

def draw(im):
    cv2.rectangle(im,(50,50), (200,200), (0, 255, 255), 2)
    return im

def welcome(name):
    return f"Hello {name}!"

def background_task():
    while True:
        print("Background task running...")
        time.sleep(1)

with gr.Blocks(theme=gr.themes.Soft()) as demo:
    inp = gr.Image(source="webcam", shape=(10,10), streaming=True, hide=True)
    out = gr.Image(label='output', )
    inp.change(draw, inp, out)
    
    name_input = gr.Textbox(label='Enter your name')
    out_text = gr.Textbox()
    name_input.change(welcome, name_input, out_text)


demo.launch()