pyclnf 0.2.3

Pure Python implementation of CLNF (Constrained Local Neural Fields) facial landmark detector

pyclnf

Pure Python implementation of OpenFace's CLNF (Constrained Local Neural Fields) facial landmark detector.

Installation

pip install pyclnf

Usage

from pyclnf import CLNF

clnf = CLNF()
landmarks, pose = clnf.fit(image)  # 68 facial landmarks + head pose

For video, use clnf.fit() on consecutive frames—it automatically tracks faces across frames.

What it does

• Detects 68 facial landmarks
• Estimates 3D head pose (pitch, yaw, roll)
• Uses OpenFace's trained CEN patch experts
• Built-in face detection via pymtcnn

Citation

If you use this in research, please cite:

Wilson IV, J., Rosenberg, J., Gray, M. L., & Razavi, C. R. (2025). A split-face computer vision/machine learning assessment of facial paralysis using facial action units. Facial Plastic Surgery & Aesthetic Medicine. https://doi.org/10.1177/26893614251394382

License

CC BY-NC 4.0 — free for non-commercial use with attribution.