A Brief Survey on Facial Expression Detection

Facial expression detection and Facial Recognition are important fields in computer vision. As per the statistics, a lot of people are going through anxiety and depression-related mental health problems, in such cases it is very important to build such a system where it can be able to identify the emotions of the people. To build systems for facial expression detection, every researcher requires three things, one is a good dataset for facial expression detection, better preprocessing methods, and a nontraditional-based AI architecture. In this paper, we explain various deep learning and machine learning methods used for facial expression detection and various dataset available for facial emotion recognition, which will help most people to explore datasets and methods which further will improve their research in the field of computer vision.