Facial expression recognition using deep learning - convolutional neural network
Nenhuma Miniatura disponível
Data
2016-03-03
Autores
Lopes, André Teixeira
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal do Espírito Santo
Resumo
Facial expression recognition has been an active research area in the past ten years, with growing application areas such avatar animation, neuromarketing and sociable robots. The recognition of facial expressions is not an easy problem for machine learning methods, since people can vary signi cantly in the way that they show their expressions. Even images of the same person in one expression can vary in brightness, background and position. Hence, facial expression recognition is still a challenging problem. To address these problems, in this work we propose a facial expression recognition system that uses Convolutional Neural Networks. Data augmentation and di erent preprocessing steps were studied together with various Convolutional Neural Networks architectures. The data augmentation and pre-processing steps were used to help the network on the feature selection. Experiments were carried out with three largely used databases (Cohn-Kanade, JAFFE, and BU3DFE) and cross-database validations (i.e. training in one database and test in another) were also performed. The proposed approach has shown to be very e ective, improving the state-of-the-art results in the literature and allowing real time facial expression recognition with standard PC computers.
Descrição
Palavras-chave
Convolutional neural networks , Computer vision , Machine learning , Expression specific features , Deep learning , Aprendizagem profunda (Computação) , Redes convolucionais , Visão computacional , Aprendizagem de máquina , Características específicas de expressões
Citação
LOPES, André Teixeira. Facial expression recognition using deep learning - convolutional neural network. 2016. 90 f. Dissertação (Mestrado em Informática) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 2016.