Effective 2D Stroke-based Gesture Augmentation for RNNs

Implementation of the augmentation methods described in the paper "Effective 2D Stroke-based Gesture Augmentation for RNNs" by Mykola Maslych, Mostafa Aldilati, Dr. Eugene M. Taranta II, and Dr. Joseph J. LaViola Jr. (2023) https://doi.org/10.1145/3544548.3581358. Check out more of our research at https://www.eecs.ucf.edu/isuelab/.

RNNs show great performance on time-series tasks, but specifically for custom gestures, the data provided by a user is not enough to train an accurate model. We evaluate a number of existing augmentation methods and chain them into series of transformations that maximize accuracy.

The following is some sample synthetic stroke gestures from the $1-GDS dataset, produced by All Variability Chain (AVC). This chain of transformations is applies gaussian noise -> frame skipping -> spatial resampling -> perspective change -> rotations -> scaling.

For more examples, check out the generate_gestures.ipynb notebook.

Getting Started

Pre-requisites

Pre-requisites can be installed by running:

pip install -r requirements.txt

• Python 3.9+
• Pytorch 1.13.1
• Pytorch Lightning 1.9.0
• SciPy 1.10.0
• NumPy 1.23.5
• Matplotlib 3.6.2
• Torchmetrics 0.11.1
• (Optional) CUDA Toolkit (for GPU support)

Training the model

To train the model, run the following command:

python main.py

You can also specify arguments, run python main.py --help to see the list of available arguments.

Citing

If you use this code for your research, please cite our paper:

@inproceedings{10.1145/3544548.3581358,
    author = {Maslych, Mykola and Taranta, Eugene Matthew and Aldilati, Mostafa and Laviola, Joseph J.},
    title = {Effective 2D Stroke-Based Gesture Augmentation for RNNs},
    year = {2023},
    isbn = {9781450394215},
    publisher = {Association for Computing Machinery},
    address = {New York, NY, USA},
    url = {https://doi.org/10.1145/3544548.3581358},
    doi = {10.1145/3544548.3581358},
    booktitle = {Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems},
    articleno = {282},
    numpages = {13},
    keywords = {neural networks, datasets, gesture recognition and customization, data augmentation},
    location = {Hamburg, Germany},
    series = {CHI '23}
}

Contributions and Bug Reports

Contributions are welcome. Please submit your contributions as a pull request and we will incorporate them. If you find any bugs, please report them as an issue.