MMDetection-based Toolbox for Semi-Supervised Object Detection

Supported algorithms

• STAC：A Simple Semi-Supervised Learning Framework for Object Detection [Arxiv'20]
• Unbiased Teacher：Unbiased Teacher for Semi-Supervised Object Detection [ICLR'21]
• Soft Teacher：End-to-End Semi-Supervised Object Detection with Soft Teacher [ICCV'21]
• LabelMatch：Label Matching Semi-Supervised Object Detection [CVPR'22]

Preparation

Prerequisites

pip install -r requirements.txt

• Linux with Python >= 3.6
• We use mmdet=2.10.0, pytorch=1.6.0

Data Preparation

Please refer to prepare_data.md.

Usage

Training

1. Use labeled data to train a baseline

Before training，please download the pretrained backbone (resnet50) to pretrained_model/backbone.

# |---------------------|--------|------|---------|---------|
# | xonsh train_gpu2.sh | config | seed | percent | dataset |
# |---------------------|--------|------|---------|---------|
cd examples/train/xonsh
## ---dataset: coco-standard---
xonsh train_gpu2.sh ./configs/baseline/baseline_ssod.py 1 1 coco-standard
## ---dataset: voc---
# xonsh train_gpu2.sh ./configs/baseline/baseline_ssod.py 1 1 voc
## ---dataset: coco-additional---
# xonsh train_gpu8.sh ./configs/baseline/baseline_ssod.py 1 1 coco-additional

• In our implementation, we use 2-gpus to train except coco-additional.

• After training, we organize the pretrained baseline to pretrained_model/baseline as follows：

  pretrained_model/
  	└── baseline/
          ├── instances_train2017.1@1.pth
          ├── instances_train2017.1@5.pth
          ├── ...
          ├── voc.pth
          └── coco.pth

  • You can also change the load_from information in config file in step 2.

2. Use labeled data + unlabeled data to train detector

## note: dataset is set to none in this step.
cd examples/train/xonsh
xonsh train_gpu8.sh ./configs/labelmatch/labelmatch_standard.py 1 1 none

• In our implementation, we use 8-gpus to train.
• You can also run bash train_ssod.sh in examples/train/bash

Evaluation

# please change "config" and "checkpoint" in 'eval.sh' scripts to support different dataset and trained model
cd examples/eval
xonsh eval.sh

Performance

LabelMatch

Model	Supervision	AP	Config	Model Weights
R50-FPN	1%	25.81±0.28	labelmatch_standard_paper	labelmatch-1-1-40k
R50-FPN	5%	32.70±0.18	labelmatch_standard_paper	labelmatch-1-5-40k
R50-FPN	10%	35.49±0.17	labelmatch_standard_paper	labelmatch-1-10-40k

• Please refer to performance.md for more performance presentation.

Extension to Domain adaptive object detection

Please refer to UDA

Citation

If you use LabelMatch in your research or wish to refer to the results published in the paper, please consider citing out paper.

@inproceedings{Chen2022LabelMatching,
    title={Label Matching Semi-Supervised Object Detection},
    author={Binbin Chen, Weijie Chen, Shicai Yang, Yunyi Xuan, JieSong, Di Xie, Shiliang Pu, Mingli Song, Yueting Zhuang.},
    booktitle={Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition},
    year={2022},
}

License

This project is released under the Apache 2.0 license. Other codes from open source repository follows the original distributive licenses.

Acknowledgement

If you have any problem about this work, please feel free to contact Binbin Chen (chenbinbin8-at-hikvision.com) and Weijie Chen (chenweijie5-at-hikvision.com).