Component-Based Real Time Facial Expression Recognition in Video Streams
Sara Alipour, Afsane Fathi · International Journal of Machine Learning and Computing · 2013
In this article a new real-time approach is proposed to recognize facial expression in video database.First, face motion direction is estimated by using motion information and then according to the face width and direction, rectangular surrounding box is formed.The advantage of this method compared with previous methods is in improving classic rectangular surrounding box model and also, using the Steerable filters to determine face direction.As eyes and mouth are the most important components in a face, in this method, eye location is calculated by combining color features and morphological functions in surrounding box region.Afterwards, with regard to the lip contour and using image processing techniques, we are able to determine the detection of mouth very accurately with the help of four points.Finally, these features are modeled by using support vector machines (SVM).Experimental results show that this algorithm is more efficient than the previous ones.