Title
Affect recognition from facial movements and body gestures by hierarchical deep spatio-temporal features and fusion strategy.
Abstract
Affect presentation is periodic and multi-modal, such as through facial movements, body gestures, and so on. Studies have shown that temporal selection and multi-modal combinations may benefit affect recognition. In this article, we therefore propose a spatio-temporal fusion model that extracts spatio-temporal hierarchical features based on select expressive components. In addition, a multi-modal hierarchical fusion strategy is presented. Our model learns the spatio-temporal hierarchical features from videos by a proposed deep network, which combines a convolutional neural networks (CNN), bilateral long short-term memory recurrent neural networks (BLSTM-RNN) with principal component analysis (PCA). Our approach handles each video as a “video sentence.” It first obtains a skeleton with the temporal selection process and then segments key words with a certain sliding window. Finally, it obtains the features with a deep network comprised of a video-skeleton and video-words. Our model combines the feature level and decision level fusion for fusing the multi-modal information. Experimental results showed that our model improved the multi-modal affect recognition accuracy rate from 95.13% in existing literature to 99.57% on a face and body (FABO) database, our results have been increased by 4.44%, and it obtained a macro average accuracy (MAA) up to 99.71%.
Year
DOI
Venue
2018
10.1016/j.neunet.2017.11.021
Neural Networks
Keywords
Field
DocType
Affect recognition,Deep learning,Convolutional neural network,Bilateral long short-term memory recurrent neural network,Deep spatio-temporal hierarchical feature,Multi-modal feature fusion strategy
Sliding window protocol,Decision level,Pattern recognition,Convolutional neural network,Gesture,Fusion,Recurrent neural network,Artificial intelligence,Macro,Machine learning,Mathematics,Principal component analysis
Journal
Volume
Issue
ISSN
105
1
0893-6080
Citations 
PageRank 
References 
7
0.49
37
Authors
4
Name
Order
Citations
PageRank
Bo Sun110421.35
Siming Cao2142.59
Jun He37111.24
Lejun Yu4363.28