Py-FEAT is a suite for facial expressions (FEX) research written in Python. This package includes tools to detect faces, extract emotional facial expressions (e.g., happiness, sadness, anger), facial muscle movements (e.g., action units), and facial landmarks, from videos and images of faces, as well as methods to preprocess, analyze, and visualize FEX data.

For detailed examples, tutorials, and API please refer to the Py-FEAT website.

Option 1: Easy installation for quick use Clone the repository
pip install py-feat

Option 2: Installation in development mode

git clone https://github.com/cosanlab/feat.git
cd feat && python setup.py install -e . 

FEAT is intended for use in Jupyter Notebook or Jupyter Lab environment. In a notebook cell, you can run the following to detect faces, facial landmarks, action units, and emotional expressions from images or videos. On the first execution, it will automatically download the default model files. You can also change the detection models from the list of supported models.

from feat.detector import Detector
detector = Detector() 
# Detect FEX from video
out = detector.detect_video("input.mp4")
# Detect FEX from image
out = detector.detect_image("input.png")

Visualize FEX detection results.

from feat.detector import Detector
detector = Detector() 
out = detector.detect_image("input.png")
out.plot_detections()

We provide a number of preprocessing and analysis functionalities including baselining, feature extraction such as timeseries descriptors and wavelet decompositions, predictions, regressions, and intersubject correlations. See examples in our tutorial.

Please respect the usage licenses for each model.

Face detection models

• FaceBoxes
• MTCNN
• RetinaFace

Facial landmark detection models

• MobileNet
• MobileFaceNet
• PFLD: Practical Facial Landmark Detector

Action Unit detection models

• FEAT-Random Forest
• FEAT-SVM
• FEAT-Logistic
• DRML: Deep Region and Multi-Label Learning
• JAANet: Joint AU Detection and Face Alignment via Adaptive Attention

Emotion detection models

• FEAT-Random Forest
• FEAT-Logistic
• FerNet
• ResMaskNet: Residual Masking Network

1. Fork the repository on GitHub.
2. Run the tests with pytest tests/ to make confirm that all tests pass on your system. If some tests fail, try to find out why they are failing. Common issues may be not having downloaded model files or missing dependencies.
3. Create your feature AND add tests to make sure they are working.
4. Run the tests again with pytest tests/ to make sure everything still passes, including your new feature. If you broke something, edit your feature so that it doesn't break existing code.
5. Create a pull request to the main repository's master branch.

Py-FEAT is provided under the MIT license. You also need to respect the licenses of each model you are using. Please see the LICENSE file for links to each model's license information.