Semi-supervised

Semi-supervised Learning is a Scalable Learner

Semi-supervised learning is the simplest way to unleash the power of labeled and unlabeled data simultaneously. Here, we provide a simple baseline for implementing large-scale semi-supervised pre-training.

Pre-training

Pre-trained Models

If you don't want to train from scratch, you can use our pre-trained models.

Model	Params	Checkpoint
VoComni_nnunet	31M	Download
VoCo_B_SSL_head	53M	Download
VoCo_L_SSL_head	206M	Download
VoCo_H_SSL_head	818M	Download
VoComni_B	72M	Download
VoComni_L	290M	Download
VoComni_H	1.2B	Download

Dataset

You can download our VoComni and assign them as labeled sets. For unlabeled sets, you can aggregate different sources of datasets into "imagesUn". It should be with same classes as VoComni.json, or you can define by yourself. Here, we only provide a baseline for training.

The path should be organized as:

├── Data
    ├── imagesTr
    ├── labelsTr
    └── imagesUn

Use gen_json.py to obtain "dataset_unlabeled.json".

Usage

cd Semi-supervised
source activate YOUR-CONDA-ENVIRONMENT
# single GPU, if you don't have enough gpu resource
sh single_train
# multi-gpu
sh dist_B.sh
sh dist_L.sh
sh dist_H.sh

Citation

If you find this repo useful for your research, please consider citing the paper as follows:

@article{wu2024large,
  title={Large-Scale 3D Medical Image Pre-training with Geometric Context Priors},
  author={Wu, Linshan and Zhuang, Jiaxin and Chen, Hao},
  journal={arXiv preprint arXiv:2410.09890},
  year={2024}
}
@InProceedings{voco-v1,
    author    = {Wu, Linshan and Zhuang, Jiaxin and Chen, Hao},
    title     = {VoCo: A Simple-yet-Effective Volume Contrastive Learning Framework for 3D Medical Image Analysis},
    booktitle = {CVPR},
    month     = {June},
    year      = {2024},
    pages     = {22873-22882}
}