Abstract
A person's emotion can be represented through facial expressions in non-vocal communication. Nowadays, automatic facial expression recognition systems have attracted myriad interest in applications such as face biometric-based authentication, behavior analysis (psychology), health monitoring (cerebral palsy), recommendation systems, and many others. Deep learning-based solutions have become the most-handy method to solve any image-video processing problems in recent times. Nevertheless, these CNN models include many hidden layers with complex predefined mathematical functions, resulting in increased complexity. Therefore, deep architecture poses a challenge to deal with a large number of learning parameters. This manuscript proposes two customized-CNN models, named Proposed_Model_1 and Proposed_Model_2, to classify universal facial expressions without overfitting. In this paper, the effect of hyper-parameters such as activation function, learning rate, kernel size, and convolutional block are investigated and optimized efficiently. Experimental results reveal that both of our proposed models outperform other existing methods considering all universal facial expressions, with an accuracy of 67.24% and 66.61%, respectively, on the well-known benchmark public dataset (Facial Expression Recognition-2013).
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Rusia, M.K., Singh, D.K. An efficient CNN approach for facial expression recognition with some measures of overfitting. Int. j. inf. tecnol. 13, 2419–2430 (2021). https://doi.org/10.1007/s41870-021-00803-x
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DOI: https://doi.org/10.1007/s41870-021-00803-x