Fusion of feature sets and classifiers for facial expression recognition

被引:107
作者
Zavaschi, Thiago H. H. [1 ]
Britto, Alceu S., Jr. [1 ]
Oliveira, Luiz E. S. [2 ]
Koerich, Alessandro L. [1 ,2 ]
机构
[1] Pontif Catholic Univ Parana PUCPR, BR-80215901 Curitiba, PR, Brazil
[2] Univ Fed Parana, BR-81531990 Curitiba, Parana, Brazil
关键词
Face recognition; Emotion recognition; Ensemble of classifiers; Feature selection; FACE; CLASSIFICATION; EMOTION;
D O I
10.1016/j.eswa.2012.07.074
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
This paper presents a novel method for facial expression recognition that employs the combination of two different feature sets in an ensemble approach. A pool of base support vector machine classifiers is created using Gabor filters and Local Binary Patterns. Then a multi-objective genetic algorithm is used to search for the best ensemble using as objective functions the minimization of both the error rate and the size of the ensemble. Experimental results on JAFFE and Cohn-Kanade databases have shown the efficiency of the proposed strategy in finding powerful ensembles, which improves the recognition rates between 5% and 10% over conventional approaches that employ single feature sets and single classifiers. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:646 / 655
页数:10
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