dc.contributor.author | Shenoy, Aruna | |
dc.contributor.author | Anthony, Susan | |
dc.contributor.author | Frank, Raymond | |
dc.contributor.author | Davey, N. | |
dc.date.accessioned | 2016-03-03T10:24:24Z | |
dc.date.available | 2016-03-03T10:24:24Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Shenoy , A , Anthony , S , Frank , R & Davey , N 2011 , ' Categorizing facial expressions : a comparison of computational models ' , Neural Computing and Applications , vol. 20 , no. 6 , pp. 815-823 . https://doi.org/10.1007/s00521-010-0446-9 | |
dc.identifier.issn | 0941-0643 | |
dc.identifier.uri | http://hdl.handle.net/2299/16613 | |
dc.description | The original publication is available at www.springerlink.com Copyright Springer | |
dc.description.abstract | Recognizing expressions is a key part of human social interaction, and processing of facial expression information is largely automatic for humans, but it is a non-trivial task for a computational system. The purpose of this work is to develop computational models capable of differentiating between a range of human facial expressions. Raw face images are examples of high-dimensional data, so here we use two dimensionality reduction techniques: principal component analysis and curvilinear component analysis. We also preprocess the images with a bank of Gabor filters, so that important features in the face images may be identified. Subsequently, the faces are classified using a support vector machine. We show that it is possible to differentiate faces with a prototypical expression from the neutral expression. Moreover, we can achieve this with data that has been massively reduced in size: in the best case the original images are reduced to just 5 components. We also investigate the effect size on face images, a concept which has not been reported previously on faces. This enables us to identify those areas of the face that are involved in the production of a facial expression. | en |
dc.format.extent | 931711 | |
dc.language.iso | eng | |
dc.relation.ispartof | Neural Computing and Applications | |
dc.subject | expressions | |
dc.subject | image analysis | |
dc.subject | classification | |
dc.subject | dimensionality reduction | |
dc.title | Categorizing facial expressions : a comparison of computational models | en |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | School of Computer Science | |
dc.contributor.institution | Learning, Memory and Thinking | |
dc.contributor.institution | Centre for Research in Psychology and Sport Sciences | |
dc.contributor.institution | Department of Psychology, Sport and Geography | |
dc.contributor.institution | School of Life and Medical Sciences | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=80051669667&partnerID=8YFLogxK | |
rioxxterms.versionofrecord | 10.1007/s00521-010-0446-9 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |