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This codebase is created to build benchmarks for object detection in aerial images.It is modified frommmdetection.The master branch works withPyTorch 1.1 or higher. If you would like to use PyTorch 0.4.1,please checkout to thepytorch-0.4.1 branch.

To adapt to object detection in aerial images, this repo has several unique and new features compared to the originalmmdetection

• Support Oriented Object Detection

  In aerial images, objects are usually annotated by oriented bounding box (OBB).To support oriented object detection, we implement OBB Head (OBBRoIHead and OBBDenseHead).Also, we provide functions to transfer mask predictions to OBBs.

• Cython Bbox Overlaps

  Since one patch image with the size of 1024 × 1024 may contain over 1000 instancesinDOTA, which make the bbox overlaps memroy consuming.To avoid out of GPU memory, we calculate the bbox overlaps in cython.The speed of cython version is close to the GPU version.

• Rotation Augmentation

  Since there are many orientation variations in aerial images, we implement the online rotation augmentation.

• Rotated RoI Warping

  Currently, we implement two types of rotated RoI Warping (Rotated RoI Align and Rotated Position Sensitive RoI Align).

This project is released under theApache 2.0 license.

• Results are available in theModel zoo.
• You can find the detailed configs in configs/DOTA.
• The trained models are available atGoogle Drive orBaidu Drive.

Please refer toINSTALL.md for installation.

Please seeGETTING_STARTED.md for the basic usage of mmdetection.

We appreciate all contributions to improve benchmarks for object detection in aerial images.

If you useDOTA dataset, codebase or models in your research, please consider cite .

@misc{ding2021object,      title={Object Detection in Aerial Images: A Large-Scale Benchmark and Challenges},       author={Jian Ding and Nan Xue and Gui-Song Xia and Xiang Bai and Wen Yang and Micheal Ying Yang and Serge Belongie and Jiebo Luo and Mihai Datcu and Marcello Pelillo and Liangpei Zhang},      year={2021},      eprint={2102.12219},      archivePrefix={arXiv},      primaryClass={cs.CV}}@inproceedings{xia2018dota,  title={DOTA: A large-scale dataset for object detection in aerial images},  author={Xia, Gui-Song and Bai, Xiang and Ding, Jian and Zhu, Zhen and Belongie, Serge and Luo, Jiebo and Datcu, Mihai and Pelillo, Marcello and Zhang, Liangpei},  booktitle={Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition},  pages={3974--3983},  year={2018}}@article{chen2019mmdetection,  title={MMDetection: Open mmlab detection toolbox and benchmark},  author={Chen, Kai and Wang, Jiaqi and Pang, Jiangmiao and Cao, Yuhang and Xiong, Yu and Li, Xiaoxiao and Sun, Shuyang and Feng, Wansen and Liu, Ziwei and Xu, Jiarui and others},  journal={arXiv preprint arXiv:1906.07155},  year={2019}}@InProceedings{Ding_2019_CVPR,author = {Ding, Jian and Xue, Nan and Long, Yang and Xia, Gui-Song and Lu, Qikai},title = {Learning RoI Transformer for Oriented Object Detection in Aerial Images},booktitle = {The IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},month = {June},year = {2019}}

Pytorch

mmdetection