Trinh Le Ba Khanh, Huy-Hung Nguyen, Long Hoang Pham, Duong Nguyen-Ngoc Tran and Jae Wook Jeon

Official Pytorch implementation of Dynamic Retraining-Updating Mean Teacher for Source-Free Object Detection, ECCV 2024 paper.

The overview of our DRU method is presented in the following figure. For more details, please refer to the paper.

• Linux, CUDA >= 11.1, GCC >= 8.4

• Python >= 3.8

• torch >= 1.10.1, torchvision >= 0.11.2

• Other requirements

  pip install -r requirements.txt

cd ./models/ops
sh ./make.sh
# unit test (should see all checking is True)
python test.py

Our method used 3 popular SFOD benchmarks:

• city2foggy: Cityscapes (source domain) → FoggyCityscapes with foggy level 0.02 (target domain).
• sim2city: Sim10k (source domain) → Cityscapes with car class (target domain).
• city2bdd: Cityscapes (source domain) → Bdd100k-daytime (target domain).

You can download the raw data from the official websites: Cityscapes, FoggyCityscapes, Sim10k, Bdd100k. The annotations are converted into COCO style, can download from here (provided by MRT-release). The datasets and annotations are organized as:

[data_root]
└─ cityscapes
	└─ annotations
		└─ cityscapes_train_cocostyle.json
		└─ cityscapes_train_caronly_cocostyle.json
		└─ cityscapes_val_cocostyle.json
		└─ cityscapes_val_caronly_cocostyle.json
	└─ leftImg8bit
		└─ train
		└─ val
└─ foggy_cityscapes
	└─ annotations
		└─ foggy_cityscapes_train_cocostyle.json
		└─ foggy_cityscapes_val_cocostyle.json
	└─ leftImg8bit_foggy
		└─ train
		└─ val
└─ sim10k
	└─ annotations
		└─ sim10k_train_cocostyle.json
	└─ JPEGImages
└─ bdd10k
	└─ annotations
		└─ bdd100k_daytime_train_cocostyle.json
		└─ bdd100k_daytime_val_cocostyle.json
	└─ images

First, run source_only to pretrain the Source-only model. Then, run teaching_standard to train the conventional Mean-Teacher framework OR teaching_mask to train the proposed DRU.

For example in city2foggy benchmark, first edit the files in configs/def-detr-base/city2foggy/ to specify your own DATA_ROOT and OUTPUT_DIR, then run:

sh configs/def-detr-base/city2foggy/source_only.sh
sh configs/def-detr-base/city2foggy/teaching_standard.sh
sh configs/def-detr-base/city2foggy/teaching_mask.sh

To evaluate the trained model and get the predicted results, run:

sh configs/def-detr-base/city2foggy/evaluation_source_only.sh
sh configs/def-detr-base/city2foggy/evaluation_teaching_standard.sh
sh configs/def-detr-base/city2foggy/evaluation_teaching_mask.sh

All experiments are conducted with batch size 8 (for source_only: 8 labeled samples; for teaching_standard or teaching_mask: 8 unlabeled samples), on an NVIDIA Quadro RTX 8000 GPU (48GB).

city2foggy: Cityscapes → FoggyCityscapes(level 0.02)

city2bdd: Cityscapes → Bdd100k(daytime)

sim2city: Sim10k → Cityscapes(car only)

If you find our paper or code useful, please cite our work:

@inproceedings{trinh2024dru,
  title={Dynamic Retraining-Updating Mean Teacher for Source-Free Object Detection},
  author={Trinh Le Ba Khanh, Huy-Hung Nguyen, Long Hoang Pham, Duong Nguyen-Ngoc Tran and Jae Wook Jeon},
  booktitle={ECCV},
  pages={https://arxiv.org/pdf/2407.16497},
  year={2024}
}

This project is built upon MRT-release, Deformable DETR, DT-ST and MIC, and we'd like to appreciate for their excellent works.

If you have any issue with code or paper, feel free to contact trinhlbk@skku.edu.