===============================================================================
DETR' Apache License 2.0
===============================================================================
The implementation code is based on the implementation in DETR
(https://github.com/facebookresearch/detr).
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Copyright (c) 2020 Facebook

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.

===============================================================================
QPIC' Apache License 2.0
===============================================================================
The implementation code is based on the implementation in QPIC
(https://github.com/hitachi-rd-cv/qpic).
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Copyright (c) 2021 Hitachi

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.