Quick start

Tensorflow Implementation of Optimizing Network Structure for 3D Human Pose Estimation (ICCV 2019)

Requirements

• Python 3.6
• tensorflow (==1.14.0)
• pprint
• prettytable

Data

Download finetuned Stacked Hourglass detections and our preprocessed H3.6M data (.pkl) here and put them under the directory dataset/. If you would like to know how we prepare the H3.6M data, please have a look at the tools/gendb.py.

Pretrained Models

We provide two kinds of checkpoints which can be downloaded here.

• trained with 2d poses detected by finetuned SH
• trained with gt 2d poses

Make two directories experiment/test1 and experiment/test2. Put the GT checkpoint file and SH_DT checkpoint file under test1/ and test2/ respectively, like:

${root}/experiment
   └── test1
       └── checkpoints
           ├── best
           └── final
   └── test2
       └── checkpoints
           ├── best
           └── final

Inference and evaluate with the pretrained models.

Inference with GT checkpoint

python inference.py --data-type scale --mode gt --test-indices 1 --mask-type locally_connected --knn 3 --layers 3 --in-F 2 --checkpoint best
python evaluate.py --data-type scale --mode gt --test-indices 1

Inference with SH_DT checkpoint

python inference.py --data-type scale --mode dt_ft --test-indices 2 --mask-type locally_connected --knn 3 --layers 3 --in-F 2 --checkpoint best
python evaluate.py --data-type scale --mode dt_ft --test-indices 2

You will get an MPJPE of 32.5mm (GT) and 51.1mm (SH_DT) respectively.

Train from Scratch

python train.py --data-type scale --mode dt_ft --test-indices 3 --mask-type locally_connected --knn 3 --layers 3 --in-F 2
python inference.py --data-type scale --mode dt_ft --test-indices 3 --mask-type locally_connected --knn 3 --layers 3 --in-F 2
python evaluate.py --data-type scale --mode dt_ft --test-indices 3

You can also try training and testing with horizontal flip (arg: --flip-data) or confidence values (--in-F 3). Both can bring an extra improvement of about 1mm in MPJPE.

Citation

If you use this code in your work, please consider citing:

@inproceedings{ci2019optimizing,
  title={Optimizing Network Structure for 3D Human Pose Estimation},
  author={Ci, Hai and Wang, Chunyu and Ma, Xiaoxuan and Wang, Yizhou},
  booktitle={Proceedings of the IEEE International Conference on Computer Vision},
  pages={2262--2271},
  year={2019}
}

Acknowledgement

This repo is built on https://github.com/mdeff/cnn_graph#using-the-model and https://github.com/una-dinosauria/3d-pose-baseline. We would like to thank the authors for publishing their code.