dc.contributor.author | Chen, Lizhe | |
dc.date.accessioned | 2022-04-29 17:53:53 (GMT) | |
dc.date.available | 2022-04-29 17:53:53 (GMT) | |
dc.date.issued | 2022-04-29 | |
dc.date.submitted | 2022-04-22 | |
dc.identifier.uri | http://hdl.handle.net/10012/18208 | |
dc.description.abstract | In recent research, the self-supervised video representation learning methods have achieved
improvement by exploring video’s temporal properties, such as playing speeds and temporal
order. These works inspire us to exploit a new artificial supervision signal for self-supervised
representation learning: the change of video playing speed. Specifically, we formulate two
novel speediness-related pretext tasks, i.e. speediness change classification and speediness
change localization, that jointly supervise a shared backbone for video representation learn ing. This self-supervision approach solves the tasks altogether and encourages the backbone
network to learn local and long-ranged motion and context representations. It outperforms
prior arts on multiple downstream tasks, such as action recognition, video retrieval, and
action localization. | en |
dc.language.iso | en | en |
dc.publisher | University of Waterloo | en |
dc.relation.uri | https://www.crcv.ucf.edu/data/UCF101.php | en |
dc.relation.uri | https://serre-lab.clps.brown.edu/resource/hmdb-a-large-human-motion-database/ | en |
dc.subject | video representation learning | en |
dc.subject | Self-supervised Learning | en |
dc.subject | Contrastive Learning | en |
dc.title | Self-supervised Video Representation Learning by Exploiting Video Speed Changes | en |
dc.type | Master Thesis | en |
dc.pending | false | |
uws-etd.degree.department | David R. Cheriton School of Computer Science | en |
uws-etd.degree.discipline | Computer Science | en |
uws-etd.degree.grantor | University of Waterloo | en |
uws-etd.degree | Master of Mathematics | en |
uws-etd.embargo.terms | 0 | en |
uws.contributor.advisor | Veksler, Olga | |
uws.contributor.affiliation1 | Faculty of Mathematics | en |
uws.published.city | Waterloo | en |
uws.published.country | Canada | en |
uws.published.province | Ontario | en |
uws.typeOfResource | Text | en |
uws.peerReviewStatus | Unreviewed | en |
uws.scholarLevel | Graduate | en |