An Efficient and Robust Technique for Facial Expression Recognition Using Modified Hidden Markov Model

Mayur Rahul, Pushpa Mamoria, Narendra Kohli and Rashi Agrawal
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Mayur Rahul: AKTU, Lucknow, India
Pushpa Mamoria: Department of Computer Applications, UIET, CSJMU, Kanpur, India
Narendra Kohli: Department of Computer Science & Engineering, HBTU, Kanpur, India
Rashi Agrawal: Department of IT, UIET, CSJMU, Kanpur, India

International Journal of Applied Evolutionary Computation (IJAEC), 2018, vol. 9, issue 3, 12-22

Abstract: Partition-based feature extraction is widely used in the pattern recognition and computer vision. This method is robust to some changes like occlusion, background, etc. In this article, a partition-based technique is used for feature extraction and extension of HMM is used as a classifier. The new introduced multi-stage HMM consists of two layers. In which bottom layer represents the atomic expression made by eyes, nose and lips. Further, the upper layer represents the combination of these atomic expressions such as smile, fear, etc. Six basic facial expressions are recognized, i.e. anger, disgust, fear, joy, sadness and surprise. Experimental results show that the proposed system performs better than normal HMM and has an overall accuracy of 85% using the JAFFE database.

Date: 2018
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