Searching for complex human activities with no visual examples

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dc.citation.epage357en_US
dc.citation.issueNumber3en_US
dc.citation.spage337en_US
dc.citation.volumeNumber80en_US
dc.contributor.authorIkizler, N.en_US
dc.contributor.authorForsyth, D.A.en_US
dc.date.accessioned2016-02-08T10:06:57Z
dc.date.available2016-02-08T10:06:57Z
dc.date.issued2008en_US
dc.departmentDepartment of Computer Engineeringen_US
dc.description.abstractWe describe a method of representing human activities that allows a collection of motions to be queried without examples, using a simple and effective query language. Our approach is based on units of activity at segments of the body, that can be composed across space and across the body to produce complex queries. The presence of search units is inferred automatically by tracking the body, lifting the tracks to 3D and comparing to models trained using motion capture data. Our models of short time scale limb behaviour are built using labelled motion capture set. We show results for a large range of queries applied to a collection of complex motion and activity. We compare with discriminative methods applied to tracker data; our method offers significantly improved performance. We show experimental evidence that our method is robust to view direction and is unaffected by some important changes of clothing. © 2008 Springer Science+Business Media, LLC.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:06:57Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2008en
dc.identifier.doi10.1007/s11263-008-0142-8en_US
dc.identifier.issn0920-5691
dc.identifier.urihttp://hdl.handle.net/11693/22954
dc.language.isoEnglishen_US
dc.relation.isversionofhttp://dx.doi.org/10.1007/s11263-008-0142-8en_US
dc.source.titleInternational Journal of Computer Visionen_US
dc.subjectActivityen_US
dc.subjectHMMen_US
dc.subjectHuman action recognitionen_US
dc.subjectMotion captureen_US
dc.subjectVideo retrievalen_US
dc.subjectChlorine compoundsen_US
dc.subjectQuery languagesen_US
dc.subjectActivityen_US
dc.subjectComplex motionsen_US
dc.subjectComplex queriesen_US
dc.subjectDiscriminative methodsen_US
dc.subjectExperimental evidenceen_US
dc.subjectHMMen_US
dc.subjectHuman action recognitionen_US
dc.subjectHuman activitiesen_US
dc.subjectImproved performanceen_US
dc.subjectLarge rangeen_US
dc.subjectMotion captureen_US
dc.subjectMotion capture dataen_US
dc.subjectShort timeen_US
dc.subjectVideo retrievalen_US
dc.subjectThree dimensionalen_US
dc.titleSearching for complex human activities with no visual examplesen_US
dc.typeArticleen_US

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