Update app.py

app.py

@@ -18,7 +18,7 @@ def detect_faces(image_np,slider):
     for (x, y, w, h) in faces:
         cv2.rectangle(image_np, (x, y), (x + w, y + h), (0, 255, 0), 2)
 
-    return image_np
+    return image_np, len(faces)
 
 # Create Gradio Interface
 iface = gr.Interface(