Title
Emotion recognition through facial expression analysis based on a neurofuzzy network
Abstract
Extracting and validating emotional cues through analysis of users' facial expressions is of high importance for improving the level of interaction in man machine communication systems. Extraction of appropriate facial features and consequent recognition of the user's emotional state that can be robust to facial expression variations among different users is the topic of this paper. Facial animation parameters (FAPs) defined according to the ISO MPEG-4 standard are extracted by a robust facial analysis system, accompanied by appropriate confidence measures of the estimation accuracy. A novel neurofuzzy system is then created, based on rules that have been defined through analysis of FAP variations both at the discrete emotional space, as well as in the 2D continuous activation–evaluation one. The neurofuzzy system allows for further learning and adaptation to specific users' facial expression characteristics, measured though FAP estimation in real life application of the system, using analysis by clustering of the obtained FAP values. Experimental studies with emotionally expressive datasets, generated in the EC IST ERMIS project indicate the good performance and potential of the developed technologies.
Year
DOI
Venue
2005
10.1016/j.neunet.2005.03.004
Neural Networks
Keywords
DocType
Volume
Facial expression analysis,MPEG-4 facial animation parameters,Activation evaluation emotion representation,Neurofuzzy network,Rule extraction,Adaptation
Journal
18
Issue
ISSN
Citations 
4
0893-6080
45
PageRank 
References 
Authors
2.82
15
6
Name
Order
Citations
PageRank
Spiros Ioannou115111.87
Amaryllis Raouzaiou230724.11
Vassilis Tzouvaras365241.89
Theofilos P. Mailis4906.26
Kostas Karpouzis595887.61
Stefanos Kollias62268229.16