Update app.py

app.py

@@ -2,8 +2,9 @@
 import gradio as gr
 import numpy as np
 
-def process_img(im):
-    return im
+def process_img(img):
+    new_img = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
+    return new_img
 
 demo = gr.Interface(
     process_img,