init

README.md

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 - [x] MapTR code
 - [x] Initialization
 
+## Acknowledgements
+
+MapTR is based on [mmdetection3d](https://github.com/open-mmlab/mmdetection3d). It is also greatly inspired by the following outstanding contributions to the open-source community: [BEVFusion](https://github.com/mit-han-lab/bevfusion), [BEVFormer](https://github.com/fundamentalvision/BEVFormer), [HDMapNet](https://github.com/Tsinghua-MARS-Lab/HDMapNet), [GKT](https://github.com/hustvl/GKT), [VectorMapNet](https://github.com/Mrmoore98/VectorMapNet_code).
+
 ## Citation
 If you find MapTR is useful in your research or applications, please consider giving us a star 🌟 and citing it by the following BibTeX entry.
 ```bibtex