Update app.py

app.py

@@ -132,6 +132,7 @@ def preprocess_image(image: Image.Image,
     """
         
     width, height  = image['composite'].size
+    image["background"] = Image.new("RGB", (width, height), (255, 255, 255))
     ratio = np.sqrt(1024. * 1024. / (width * height))
     new_width, new_height = int(width * ratio), int(height * ratio)
     image = image['composite'].resize((new_width, new_height))
@@ -423,7 +424,7 @@ with gr.Blocks(delete_cache=(600, 600)) as demo:
                         label="controlnet conditioning scale",
                         minimum=0.5,
                         maximum=5.0,
-                        step=0.1,
+                        step=0.01,
                         value=0.8,
                     )
                 with gr.Tab(label="3D generation"):