Journal of Xidian University ›› 2021, Vol. 48 ›› Issue (5): 30-37.doi: 10.19665/j.issn1001-2400.2021.05.005

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Synthesis of the expression image and its application under the dimentional emotion model

YANG Jingbo1(),ZHAO Qijun1,2(),LYU Zejun1()   

  1. 1. College of Computer Science,Sichuan University,Chengdu 610065,China
    2. School of Information Science and Technology,Tibet University,Lhasa 850000,China
  • Received:2021-07-17 Online:2021-10-20 Published:2021-11-09

Abstract:

In order to solve the problem that the training data of deep learning based facial expression recognition methods usually cover a limited part of the expression space and have an imbalanced distribution,we propose AV-GAN,a facial expression image synthesis method in Arousal-Valence dimensional emotion space,based on the generative adversarial network,to generate more diverse and balanced facial expression training data.The method uses label distribution to represent the expression for the face image,and employs an identity control module,an expression control module,and adversarial learning to realize the random sampling and generation of expression images in Arousal-Valence space.Evaluations on Oulu-CASIA database show that the accuracy of the recognition of the facial expression using the proposed method to augment training data is increased by 6.5%,compared with that using the original training data.It is proved that the proposed method can effectively improve the facial expression recognition accuracy under imbalanced training data.

Key words: Arousal-Valence emotion model, generative adversarial network, image generation, data augmentation, facial expression recognition

CLC Number: 

  • TP391