import gradio as gr
import cv2

def process_image(input_image):
    # Convert the image to grayscale
    gray_image = cv2.cvtColor(input_image, cv2.COLOR_BGR2GRAY)

    return gray_image

iface = gr.Interface(fn=process_image, inputs="image", outputs="image", 
                     examples=['img.jpg'])
iface.launch()