Facial Expression Recognition(FER) is progressively picking up significance in different Affective computing
applications. FER contributes to various application domains like computer vision, image processing, human computer interaction,
information security, affective computing. This paper describes various emotion recognition techniques like LBP, and their
performance is listed. Two common methods of Facial Expression Recognition System are appearance based and geometry based.
This paper aims at describing a general procedure of how to recognize various facial expressions and making comparative study of
various procedures. Also, describes various problems in facial expression recognition systems and methods implemented in
resolving those issues.
Keywords:Expression Recognition, Affective computing, Emotion Recognition, Facial Expression Recognition.