[fix] make gradio live to prevent dropdown clear and validate preprocess_type

app.py

@@ -39,6 +39,9 @@ def clear_session_files(session_id):
         shutil.rmtree(session_dir)
 
 def reflection_removal(input_image, preprocess_type="resize_and_crop"):
+    if preprocess_type == "":
+        preprocess_type = "resize_and_crop"
+    
     session_id = generate_session_id()
     session_dir = os.path.join(UPLOAD_DIR, session_id)
     upload_dir = os.path.join(session_dir, "uploads")
@@ -110,7 +113,8 @@ iface = gr.Interface(
         for img in sample_images
     ],
     title="Reflection Remover with Pix2Pix",
-    description="Upload images to remove reflections using a Pix2Pix model. You can also try the sample images below."
+    description="Upload images to remove reflections using a Pix2Pix model. You can also try the sample images below.",
+    live=True
 )
 
 if __name__ == "__main__":