A review paper on face detection and facial expression recognition using MATLAB

Now a day face detection & facial expression recognition is one of the major challenging problemin the field of image processing. It is a challenging issue as human color, pose, expression, and orientation varies with regions. Therefore, to detect face & facial expression we need to accept different models & techniques. Detection of different facial expression based on movement of eyes, position of nose & nose tail, gradient of eye brows, movement of lips etc. Detection of facial expression can be done with the help of any neural network or fuzzy logic. This paper reviews different techniques of face detection & facial expression recognition.