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• W2600389231 abstract "One key challenging issue of facial expression recognition is to capture the dynamic variation of facial physical structure from videos. In this paper, we propose a part-based hierarchical bidirectional recurrent neural network (PHRNN) to analyze the facial expression information of temporal sequences. Our PHRNN models facial morphological variations and dynamical evolution of expressions, which is effective to extract “temporal features” based on facial landmarks (geometry information) from consecutive frames. Meanwhile, in order to complement the still appearance information, a multi-signal convolutional neural network (MSCNN) is proposed to extract “spatial features” from still frames. We use both recognition and verification signals as supervision to calculate different loss functions, which are helpful to increase the variations of different expressions and reduce the differences among identical expressions. This deep evolutional spatial-temporal network (composed of PHRNN and MSCNN) extracts the partial-whole, geometry-appearance, and dynamic-still information, effectively boosting the performance of facial expression recognition. Experimental results show that this method largely outperforms the state-of-the-art ones. On three widely used facial expression databases (CK+, Oulu-CASIA, and MMI), our method reduces the error rates of the previous best ones by 45.5%, 25.8%, and 24.4%, respectively." @default.
• W2600389231 created "2017-04-07" @default.
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• W2600389231 date "2017-09-01" @default.
• W2600389231 modified "2023-10-18" @default.
• W2600389231 title "Facial Expression Recognition Based on Deep Evolutional Spatial-Temporal Networks" @default.
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• W2600389231 doi "https://doi.org/10.1109/tip.2017.2689999" @default.
• W2600389231 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28371777" @default.
• W2600389231 hasPublicationYear "2017" @default.
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