Official pytorch implementation of Active Learning for deep object detection via probabilistic modeling (ICCV 2021)

Overview

Active Learning for Deep Object Detection via Probabilistic Modeling

This repository is the official PyTorch implementation of Active Learning for Deep Object Detection via Probabilistic Modeling, ICCV 2021.

The proposed method is implemented based on the SSD pytorch.

Our approach relies on mixture density networks to estimate, in a single forward pass of a single model, both localization and classification uncertainties, and leverages them in the scoring function for active learning.

Our method performs on par with multiple model-based methods (e.g., ensembles and MC-Dropout). Therefore, our method provides the best trade-off between accuracy and computational cost.

License

To view a NVIDIA Source Code License for this work, visit https://github.com/NVlabs/AL-MDN/blob/main/LICENSE

Requirements

For setup and data preparation, please refer to the README in SSD pytorch.

Code was tested in virtual environment with Python 3+ and Pytorch 1.1.

Training

  • Make directory mkdir weights and cd weights.

  • Download the FC-reduced VGG-16 backbone weight in the weights directory, and cd ...

  • If necessary, change the VOC_ROOT in data/voc0712.py or COCO_ROOT in data/coco.py.

  • Please refer to data/config.py for configuration.

  • Run the training code:

# Supervised learning
CUDA_VISIBLE_DEVICES=<GPU_ID> python train_ssd_gmm_supervised_learning.py

# Active learning
CUDA_VISIBLE_DEVICES=<GPU_ID> python train_ssd_gmm_active_learining.py

Evaluation

  • To evaluate on MS-COCO, change the COCO_ROOT_EVAL in data/coco_eval.py.

  • Run the evaluation code:

# Evaluation on PASCAL VOC
python eval_voc.py --trained_model <trained weight path>

# Evaluation on MS-COCO
python eval_coco.py --trained_model <trained weight path>

Visualization

  • Run the visualization code:
python demo.py --trained_model <trained weight path>

Citation

@InProceedings{Choi_2021_ICCV,
    author    = {Choi, Jiwoong and Elezi, Ismail and Lee, Hyuk-Jae and Farabet, Clement and Alvarez, Jose M.},
    title     = {Active Learning for Deep Object Detection via Probabilistic Modeling},
    booktitle = {Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV)},
    month     = {October},
    year      = {2021},
    pages     = {10264-10273}
}
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