Based off of cnexus's filter app for AKPsi and AlexEKoren's filter app for Technica Here's a demo
pip install -r requirements.txt
You'll need to create a Facebook app and publish it (get it out of developer mode). Update the FACEBOOK_APP_ID and FACEBOOK_APP_SECRET in app.py
To change the filter mask, switch out the mask.png in /static/images
python app.py
Runs on http://localhost:5000 by default.