- Title
- A component based approach improves classification of discrete facial expressions over a holistic approach
- Creator
- Hong, Kenny; Chalup, Stephan K.; King, Robert A. R.
- Relation
- 2010 IEEE World Congress on Computational Intelligence (WCCI 2010). Proceedings of the IEEE World Congress on Computational Intelligence 2010 (Barcelona, Spain 18-23 July, 2010)
- Publisher Link
- http://dx.doi.org/10.1109/IJCNN.2010.5596836
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2010
- Description
- Current approaches to facial expression classification employ a variety of expression classes and different preprocessing steps, making comparison of results difficult. To outline the effects of these variations we explore several image and action preprocessing steps, using the discrete expressions: happy, sad, surprised, fearful, angry, disgusted and neutral; with a dataset aligned and normalised by our proposed face model. Each of the preprocessing steps is organised across four prominent approaches: holistic, holistic action, component and component action. These are compared using a modified multiclass Support Vector Machine (SVM) that uses pairwise adaptive model parameters. We illustrate that including the neutral expression as part of the study has a noticeable impact, and suggest that it should be used in future research in this area. We also show that results can be improved through innovative use of image and action preprocessing steps. Our best correct classification rate was 98.33% using 10-fold cross validation and a component action approach.
- Subject
- facial expression classification; support vector machines; image preprocessing
- Identifier
- http://hdl.handle.net/1959.13/915934
- Identifier
- uon:7863
- Identifier
- ISSN:9781424469161
- Rights
- Copyright © 2010 IEEE. Reprinted from the 2010 IEEE World Congress on Computational Intelligence. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- Language
- eng
- Full Text
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