3D ResNets for Action Recognition

This is the PyTorch code for the following paper:

Kensho Hara, Hirokatsu Kataoka, and Yutaka Satoh,
"Learning Spatio-Temporal Features with 3D Residual Networks for Action Recognition",
arXiv preprint, arXiv:1708.07632, 2017.

The paper will appear in ICCV 2017 Workshop (Chalearn).

This code includes only training and testing on the Kinetics dataset.
If you want to classify your videos or extract video features of them using our pretrained models, use this code.

The Torch (Lua) version of this code is available here.

Citation

If you use this code or pre-trained models, please cite the following:

@article{hara3dresnets
  author={Kensho Hara and Hirokatsu Kataoka and Yutaka Satoh}
  title={Learning Spatio-Temporal Features with 3D Residual Networks for Action Recognition}
  journal={arXiv preprint}
  volume={arXiv:1708.07632}
  year={2017}
}

Pre-trained models

Pre-trained models are available at releases.

Requirements

PyTorch

conda install pytorch torchvision cuda80 -c soumith

FFmpeg, FFprobe

wget http://johnvansickle.com/ffmpeg/releases/ffmpeg-release-64bit-static.tar.xz
tar xvf ffmpeg-release-64bit-static.tar.xz
cd ./ffmpeg-3.3.3-64bit-static/; sudo cp ffmpeg ffprobe /usr/local/bin;

Python 3

Preparation

ActivityNet

Download datasets using official crawler codes
Convert from avi to jpg files using utils/video_jpg.py

python utils/video_jpg.py avi_video_directory jpg_video_directory

Generate fps files using utils/fps.py

python utils/fps.py avi_video_directory jpg_video_directory

Kinetics

Download the Kinetics dataset using official crawler codes
- Locate test set in video_directory/test.
Convert from avi to jpg files using utils/video_jpg_kinetics.py

python utils/video_jpg_kinetics.py avi_video_directory jpg_video_directory

Generate n_frames files using utils/n_frames_kinetics.py

python utils/n_frames_kinetics.py jpg_video_directory

Generate annotation file in json format similar to ActivityNet using utils/kinetics_json.py

python utils/kinetics_json.py train_csv_path val_csv_path test_csv_path json_path

Running the code

Assume the structure of data directories is the following:

~/
  data/
    kinetics_videos/
      jpg/
        .../ (directories of class names)
          .../ (directories of video names)
            ... (jpg files)
    results/
      save_100.pth
    kinetics.json

Confirm all options.

python main.lua -h

Train ResNets-34 on the Kinetics dataset (400 classes) with 4 CPU threads (for data loading).
Batch size is 128.
Save models at every 5 epochs. All GPUs is used for the training. If you want a part of GPUs, use CUDA_VISIBLE_DEVICES=....

python main.py --root_path ~/data --video_path kinetics_videos/jpg --annotation_path kinetics.json \
--result_path results --dataset kinetics --model resnet \
--model_depth 34 --n_classes 400 --batch_size 128 --n_threads 4 --checkpoint 5

Continue Training from epoch 101. (~/data/results/save_100.pth is loaded.)

python main.py --root_path ~/data --video_path kinetics_videos/jpg --annotation_path kinetics.json \
--result_path results --dataset kinetics --resume_path results/save_100.pth \
--batch_size 128 --n_threads 4 --checkpoint 5

DimplesL/3D-ResNets-PyTorch