Expression Recognition Algorithm


Good Day Everyone,

Thanks for developing this amazing SDK, i am currently doing my project with this SDK for educational purpose. I already know that affectiva use Haar Cascade Algorithm for face detection, but i dont really know what algorithm Affectiva use for Facial Expression Recognition. can someone help me to answer this question (i don’t know this kind of question will be allowed or not).




We use a combination of Deep neural nets and HOG + SVM classifiers for expression and emotion recognition. Also the next version of the SDK we are favoring using region proposal network to replace the Haar Cascade.

Some information about the different methodologies can be found in our publsihed papers:


Thank you so much for the answer, it’s help me a lot.