Aly, Robin, Arandjelovic, Relja, Chatfield, Ken, Douze, Matthijs, Fernando, Basura, Harchaoui, Zaid, McGuinness, Kevin ORCID: 0000-0003-1336-6477, O'Connor, Noel E. ORCID: 0000-0002-4033-9135, Oneata, Dan, Parkhi, Omkar M., Potapov, Danila, Revaud, Jérôme, Schmid, Cordelia, Schwenninger, Jochen, Scott, David, Tuytelaars, Tinne, Verbeek, Jakob, Wang, Heng and Zisserman, Andrew (2013) The AXES submissions at TrecVid 2013. In: TRECVid 2013, 20-22 Nov 2013, Gaithersburg, Maryland, USA.
Abstract
The AXES project participated in the interactive instance search task (INS), the semantic indexing task (SIN) the multimedia event recounting task (MER), and the multimedia event detection task (MED) for TRECVid 2013. Our interactive INS focused this year on using classifiers trained at query time with positive examples collected from external search engines. Participants in our INS experiments were carried out by students and researchers at Dublin City University. Our best INS runs performed on par with the top ranked INS runs in terms of P@10 and P@30, and around the median in terms of mAP.
For SIN, MED and MER, we use systems based on state- of-the-art local low-level descriptors for motion, image, and sound, as well as high-level features to capture speech and text and the visual and audio stream respectively. The low-level descriptors were aggregated by means of Fisher vectors into high- dimensional video-level signatures, the high-level features are aggregated into bag-of-word histograms. Using these features we train linear classifiers, and use early and late-fusion to combine the different features. Our MED system achieved the best score of all submitted runs in the main track, as well as in the ad-hoc track.
This paper describes in detail our INS, MER, and MED systems and the results and findings of our experiment
Metadata
Item Type: | Conference or Workshop Item (Paper) |
---|---|
Event Type: | Workshop |
Refereed: | No |
Subjects: | Computer Science > Interactive computer systems Computer Science > Machine learning Engineering > Signal processing Computer Science > Multimedia systems Computer Science > Image processing Computer Science > Computer software Computer Science > Digital video Computer Science > Information retrieval |
DCU Faculties and Centres: | DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering Research Institutes and Centres > INSIGHT Centre for Data Analytics DCU Faculties and Schools > Faculty of Engineering and Computing > School of Computing |
Use License: | This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License |
Funders: | European Framework Programme 7 |
ID Code: | 19671 |
Deposited On: | 26 Nov 2013 10:06 by Dr. Kevin McGuinness . Last Modified 24 Jan 2019 15:35 |
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