Update app.py

app.py

@@ -299,7 +299,7 @@ def predict(image, offset, coin_size_mm):
         scaling_factor= calculate_scaling_factor(
             reference_image_path="./coin.jpg",
             target_image=reference_square_mask,
-            # reference_obj_size_mm = coin_size_mm,
+            reference_obj_size_mm = coin_size_mm,
             feature_detector="ORB",
         )
     except Exception as e: