Title
Facial expression recognition using optimized active regions
Abstract
In this paper, we report an effective facial expression recognition system for classifying six or seven basic expressions accurately. Instead of using the whole face region, we define three kinds of active regions, i.e., left eye regions, right eye regions and mouth regions. We propose a method to search optimized active regions from the three kinds of active regions. A Convolutional Neural Network (CNN) is trained for each kind of optimized active regions to extract features and classify expressions. In order to get representable features, histogram equalization, rotation correction and spatial normalization are carried out on the expression images. A decision-level fusion method is applied, by which the final result of expression recognition is obtained via majority voting of the three CNNs’ results. Experiments on both independent databases and fused database are carried out to evaluate the performance of the proposed system. Our novel method achieves higher accuracy compared to previous literature, with the added benefit of low latency for inference.
Year
DOI
Venue
2018
10.1186/s13673-018-0156-3
Human-centric Computing and Information Sciences
Keywords
Field
DocType
Facial expression recognition,Optimized active regions,Convolutional Neural Network,Decision-level fusion
Data mining,Facial expression recognition,Expression (mathematics),Pattern recognition,Convolutional neural network,Computer science,Inference,Spatial normalization,Artificial intelligence,Latency (engineering),Majority rule,Histogram equalization
Journal
Volume
Issue
ISSN
8
1
2192-1962
Citations 
PageRank 
References 
3
0.42
26
Authors
5
Name
Order
Citations
PageRank
Ai Sun130.42
Yingjian Li230.42
Yueh-Min Huang32455278.09
Qiong Li42311.77
Guangming Lu530.42