diff --git a/create_data/image_processing/ctu.py b/create_data/image_processing/ctu.py
index eac7d2a..8e18912 100644
--- a/create_data/image_processing/ctu.py
+++ b/create_data/image_processing/ctu.py
@@ -1,3 +1,19 @@
+# Copyright 2025 Zhejiang University (ZJU), China,  
+# and the TimeMastere team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import os
 import argparse
 import numpy as np