A Spatio-Temporal Descriptor for Dynamic 3D Facial Expression Retrieval and Recognition

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dc.contributor.author Danelakis, Antonios en_US
dc.contributor.author Theoharis, Theoharis en_US
dc.contributor.author Pratikakis, Ioannis en_US
dc.contributor.editor I. Pratikakis and M. Spagnuolo and T. Theoharis and L. Van Gool and R. Veltkamp en_US
dc.date.accessioned 2015-04-27T11:03:36Z
dc.date.available 2015-04-27T11:03:36Z
dc.date.issued 2015 en_US
dc.identifier.uri http://dx.doi.org/10.2312/3dor.20151056 en_US
dc.description.abstract The recent availability of dynamic 3D facial scans has spawned research activity in recognition based on such data. However, the problem of facial expression retrieval based on dynamic 3D facial data has hardly been addressed and is the subject of this paper. A novel descriptor is created, capturing the spatio-temporal deformation of the 3D facial mesh sequence. Experiments have been implemented using the standard BU - 4DFE dataset. The obtained retrieval results exceed the state-of-the-art results and the new descriptor is much more frugal in terms of space requirements. Furthermore, a methodology which exploits the retrieval results, in order to achieve unsupervised dynamic 3D facial expression recognition is presented, in order to directly compare the proposed descriptor against the wealth of works in recognition. The aforementioned unsupervised methodology outperforms the supervised dynamic 3D facial expression recognition state-of-the-art techniques in terms of classification accuracy. en_US
dc.publisher The Eurographics Association en_US
dc.subject I.3.8 [Computer Graphics] en_US
dc.subject Applications en_US
dc.subject I.3.5 [Computer Graphics] en_US
dc.subject Computational Geometry and Object Modeling en_US
dc.subject Curve en_US
dc.subject surface en_US
dc.subject solid en_US
dc.subject object representations H.3.3 [Information Storage and Retrieval] en_US
dc.subject Information Search and Retrieval en_US
dc.subject Retrieval models en_US
dc.title A Spatio-Temporal Descriptor for Dynamic 3D Facial Expression Retrieval and Recognition en_US
dc.description.seriesinformation Eurographics Workshop on 3D Object Retrieval en_US
dc.description.sectionheaders 3D Facial Analysis and Retrieval en_US
dc.identifier.doi 10.2312/3dor.20151056 en_US
dc.identifier.pages 63-70 en_US

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