diff --git a/pcdet/models/backbones_image/__init__.py b/pcdet/models/backbones_image/__init__.py
new file mode 100644
index 0000000..d9b0e68
--- /dev/null
+++ b/pcdet/models/backbones_image/__init__.py
@@ -0,0 +1,4 @@
+from .swin import SwinTransformer
+__all__ = {
+    'SwinTransformer':SwinTransformer,
+}
\ No newline at end of file