Author(s)

Zijie Sheng

Corresponding Author

Zijie Sheng

ABSTRACT

With the rapid development of machine learning and artificial intelligence and the widespread popularity of intelligent devices, facial recognition technology is experiencing unprecedented development. Among this recent growth, facial expression recognition (FER) has been a hot research topic and has received extensive attention by various fields over recent years. This paper introduces the basic steps of face recognition in detail, briefly reviews the research progress of scholars at home and abroad, and compares their research progress and methods. Through the above comparison and analysis, we can uncover the current research difficulties and discuss them in depth. Finally, trends in the future development of facial expression recognition are addressed, which can provide great reference material for researchers attempting to master facial expression recognition technology.

KEYWORDS

Facial expression recognition, feature extraction, facial expression features