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

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dc.contributor.authorDanelakis, Antoniosen_US
dc.contributor.authorTheoharis, Theoharisen_US
dc.contributor.authorPratikakis, Ioannisen_US
dc.contributor.editorI. Pratikakis and M. Spagnuolo and T. Theoharis and L. Van Gool and R. Veltkampen_US
dc.date.accessioned2015-04-27T11:03:36Z
dc.date.available2015-04-27T11:03:36Z
dc.date.issued2015en_US
dc.description.abstractThe 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.description.sectionheaders3D Facial Analysis and Retrievalen_US
dc.description.seriesinformationEurographics Workshop on 3D Object Retrievalen_US
dc.identifier.doi10.2312/3dor.20151056en_US
dc.identifier.pages63-70en_US
dc.identifier.urihttps://doi.org/10.2312/3dor.20151056en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectI.3.8 [Computer Graphics]en_US
dc.subjectApplicationsen_US
dc.subjectI.3.5 [Computer Graphics]en_US
dc.subjectComputational Geometry and Object Modelingen_US
dc.subjectCurveen_US
dc.subjectsurfaceen_US
dc.subjectsoliden_US
dc.subjectobject representations H.3.3 [Information Storage and Retrieval]en_US
dc.subjectInformation Search and Retrievalen_US
dc.subjectRetrieval modelsen_US
dc.titleA Spatio-Temporal Descriptor for Dynamic 3D Facial Expression Retrieval and Recognitionen_US
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