fix: planes_path is undefined

app.py

@@ -231,11 +231,11 @@ def step_1_generate_planes(image):
     return planes_path.shape
 
 def step_2_generate_obj(image):
-    _, mesh_path = generate_mesh(image, export_mesh=True)
+    planes_path, mesh_path = generate_mesh(image, export_mesh=True)
     return planes_path.shape, mesh_path, mesh_path
 
 def step_3_generate_video(image):
-    _, video_path = generate_mesh(image, export_video=True)
+    planes_path, video_path = generate_mesh(image, export_video=True)
     return planes_path.shape, video_path
 
 # 从 assets 文件夹中设置示例文件，并限制最多读取 10 个文件