Review and Analysis of Various Lip Reading System Techniques

Abstract

Speech is the most common and natural methodology of communication. There are many approaches available for lip reading. In this paper, various techniques for lip reading are being reviewed. The important stages are speech, lip reading, feature extraction and recognition. Many classification techniques have been surveyed in this paper like neural networks, lip extraction technique, cues of lip shape, sign language recognition, 3D tracking system, 3D-discrete cosine transform etc.