TY - JOUR T1 - Facial Expression Recognition Using Local Arc Pattern AU - Islam, Mohammad Shahidul AU - Auwatanamongkol, Surapong JO - Asian Journal of Information Technology VL - 12 IS - 4 SP - 126 EP - 130 PY - 2013 DA - 2001/08/19 SN - 1682-3915 DO - ajit.2013.126.130 UR - https://makhillpublications.co/view-article.php?doi=ajit.2013.126.130 KW - Facial expression recognition KW -image processing KW -local feature extraction KW -pattern recognition KW -JAFFE KW -computer vision AB - The success of a good facial expression recognition system depends on the facial feature descriptor. This study presents a unique local facial feature descriptor, the Local Arc Pattern (LAP) for facial expression recognition. Feature is obtained from a local 5x5 pixels region by comparing the gray color intensity values surrounding the referenced pixel to formulate two separate binary patterns for the referenced pixel. Each face is divided into equal sized blocks and histograms of LAP codes from those blocks are concatenated to build the feature vector for classification. The recognition performance of proposed method was evaluated on popular Japanese Female facial expression dataset using support vector machine as the classifier. Extensive experimental results with prototype expressions show that proposed feature descriptor outperforms several popular existing appearance-based feature descriptors in terms of classification accuracy. ER -