Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion Recognition

Facial expressions are indispensable in human cognitive behaviors since it can instantly reveal human emotions. Therefore, in this study, Multiple Convolutional Neural Networks using Improved Fuzzy Integral (MCNNs-IFI) were proposed for recognizing facial emotions. Since effective facial expression...

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Main Authors: Cheng-Jian Lin, Chun-Hui Lin, Shyh-Hau Wang, Chen-Hsien Wu
Format: Article
Language:English
Published: MDPI AG 2019-06-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/9/13/2593
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author Cheng-Jian Lin
Chun-Hui Lin
Shyh-Hau Wang
Chen-Hsien Wu
author_facet Cheng-Jian Lin
Chun-Hui Lin
Shyh-Hau Wang
Chen-Hsien Wu
author_sort Cheng-Jian Lin
collection DOAJ
description Facial expressions are indispensable in human cognitive behaviors since it can instantly reveal human emotions. Therefore, in this study, Multiple Convolutional Neural Networks using Improved Fuzzy Integral (MCNNs-IFI) were proposed for recognizing facial emotions. Since effective facial expression features are difficult to design; deep learning CNN is used in the study. Each CNN has its own advantages and disadvantages, thus combining multiple CNNs can yield superior results. Moreover, multiple CNNs combined with improved fuzzy integral, in which its fuzzy density value is optimized through particle swarm optimization (PSO), overcomes the majority decision drawback in the traditional voting method. Two Multi-PIE and CK+ databases and three main CNN structures, namely AlexNet, GoogLeNet, and LeNet, were used in the experiments. To verify the results, a cross-validation method was used, and experimental results indicated that the proposed MCNNs-IFI exhibited 12.84% higher accuracy than that of the three CNNs.
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spelling doaj.art-82d6e1b39008421ab879a93138d4c6212022-12-22T00:40:58ZengMDPI AGApplied Sciences2076-34172019-06-01913259310.3390/app9132593app9132593Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion RecognitionCheng-Jian Lin0Chun-Hui Lin1Shyh-Hau Wang2Chen-Hsien Wu3Department of Computer Science and Information Engineering, National Chin-Yi University of Technology, Taichung City 411, TaiwanDepartment of Computer Science & Information Engineering Nation Cheng Kung University, Tainan 701, TaiwanDepartment of Computer Science & Information Engineering Nation Cheng Kung University, Tainan 701, TaiwanDepartment of Computer Science and Information Engineering, National Chin-Yi University of Technology, Taichung City 411, TaiwanFacial expressions are indispensable in human cognitive behaviors since it can instantly reveal human emotions. Therefore, in this study, Multiple Convolutional Neural Networks using Improved Fuzzy Integral (MCNNs-IFI) were proposed for recognizing facial emotions. Since effective facial expression features are difficult to design; deep learning CNN is used in the study. Each CNN has its own advantages and disadvantages, thus combining multiple CNNs can yield superior results. Moreover, multiple CNNs combined with improved fuzzy integral, in which its fuzzy density value is optimized through particle swarm optimization (PSO), overcomes the majority decision drawback in the traditional voting method. Two Multi-PIE and CK+ databases and three main CNN structures, namely AlexNet, GoogLeNet, and LeNet, were used in the experiments. To verify the results, a cross-validation method was used, and experimental results indicated that the proposed MCNNs-IFI exhibited 12.84% higher accuracy than that of the three CNNs.https://www.mdpi.com/2076-3417/9/13/2593Facial emotion recognitionconvolutional neural networkfuzzy integralparticle swarm optimization
spellingShingle Cheng-Jian Lin
Chun-Hui Lin
Shyh-Hau Wang
Chen-Hsien Wu
Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion Recognition
Applied Sciences
Facial emotion recognition
convolutional neural network
fuzzy integral
particle swarm optimization
title Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion Recognition
title_full Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion Recognition
title_fullStr Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion Recognition
title_full_unstemmed Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion Recognition
title_short Multiple Convolutional Neural Networks Fusion Using Improved Fuzzy Integral for Facial Emotion Recognition
title_sort multiple convolutional neural networks fusion using improved fuzzy integral for facial emotion recognition
topic Facial emotion recognition
convolutional neural network
fuzzy integral
particle swarm optimization
url https://www.mdpi.com/2076-3417/9/13/2593
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