CapsuleNet for Micro-Expression Recognition

Abstract

Facial micro-expression recognition has attracted researchers in terms of its objectiveness to reveal the true emotion of a person. However, the limited number of publicly available datasets on micro-expression and its low intensity of facial movements have posed a great challenge to training robust data-driven models for recognition task. In 2019, Facial Micro-Expression Grand Challenge combines three popular datasets, i.e. SMIC, CASME II, and SAMM into a single cross-database which requires the generalization of proposed method on a wider range of subject characteristics. In this paper, we propose a simple yet effective CapsuleNet for micro-expression recognition. The effectiveness of our proposed methods was evaluated on the cross-database micro-expression benchmark using the Leave-One-Object-Out cross-validation. The experiments show that our method achieved superiorly higher results than the baseline method (LBP-TOP) provided and other state-of-the-art CNN models.

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