Survey of the facial expression recognition research

Abstract

Facial expression recognition is one of the hot spots in recent years, it applies in the emotional analysis, pattern recognition and interpersonal interaction. This paper introduces the recent advances and applications in facial expression recognition from the face detection, feature extraction, classification, and the ethnic expression recognition. The methods of feature extraction are divided to several different characteristic categories. Researches of classifications are based on space or time and space. What's more, according to the facial expression recognition history and achievements, the development of ethnic facial expression recognition and the trend of facial expression recognition are given. © 2012 Springer-Verlag.