Facial Emotion Recognition Techniques: A Review

Natural facial expressions commonly occur in social interactions among people and are useful in providing an emotional context for interaction and communicating social intentions. Facial expression recognition has been the subject of active research in recent years. Various techniques have been proposed for facial detection, extraction of characteristics, and classification of emotions. This paper presents an overview of the effective methods proposed in recent years, a brief introduction to the system and database that have been used for this purpose. Several authors have used different algorithms for the same problem described in this document. In this review paper various methods of emotion recognition are discussed and compared.