Multi-classifier Fusion Based Facial Expression Recognition Approach

作者：Jia Xibin^*; Zhang Yanhua; Powers David; Ali Humayra Binte

来源：KSII Transactions on Internet and Information Systems, 2014, 8(1): 196-212.

DOI：10.3837/tiis.2014.01.012

• Multi-classifier fusion
• stacking
• facial expression recognition
• kappa-error diagram

Facial expression recognition is an important part in emotional interaction between human and machine. This paper proposes a facial expression recognition approach based on multi-classifier fusion with stacking algorithm. The kappa-error diagram is employed in base-level classifiers selection, which gains insights about which individual classifier has the better recognition performance and how diverse among them to help improve the recognition accuracy rate by fusing the complementary functions. In order to avoid the influence of the chance factor caused by guessing in algorithm evaluation and get more reliable awareness of algorithm performance, kappa and informedness besides accuracy are utilized as measure criteria in the comparison experiments. To verify the effectiveness of our approach, two public databases are used in the experiments. The experiment results show that compared with individual classifier and two other typical ensemble methods, our proposed stacked ensemble system does recognize facial expression more accurately with less standard deviation. It overcomes the individual classifier%26apos;s bias and achieves more reliable recognition results.

• 出版日期2014-1-29
• 单位北京工业大学