NDLI: (Unseen) event recognition via semantic compositionality

Content Provider	IEEE Xplore Digital Library
Author	Stottinger, J. Uijlings, J.R.R. Pandey, A.K. Sebe, N. Giunchiglia, F.
Copyright Year	2012
Description	Author affiliation: University of Trento, Trento, Italy (Stottinger, J.; Uijlings, J.R.R.; Pandey, A.K.; Sebe, N.; Giunchiglia, F.)
Abstract	Since high-level events in images (e.g. “dinner”, “motorcycle stunt”, etc.) may not be directly correlated with their visual appearance, low-level visual features do not carry enough semantics to classify such events satisfactorily. This paper explores a fully compositional approach for event based image retrieval which is able to overcome this shortcoming. Furthermore, the approach is fully scalable in both adding new events and new primitives. Using the Pascal VOC 2007 dataset, our contributions are the following: (i) We apply the Faceted Analysis-Synthesis Theory (FAST) to build a hierarchy of 228 high-level events. (ii) We show that rule-based classifiers are better suited for compositional recognition of events than SVMs. In addition, rule-based classifiers provide semantically meaningful event descriptions which help bridging the semantic gap. (iii) We demonstrate that compositionality enables unseen event recognition: we can use rules learned from non-visual cues, together with object detectors to get reasonable performance on unseen event categories.
Starting Page	3061
Ending Page	3068
File Size	244260
Page Count	8
File Format	PDF
ISBN	9781467312264
ISSN	10636919
e-ISBN	9781467312288
e-ISBN	9781467312271
DOI	10.1109/CVPR.2012.6248037
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motorcycles Semantics Visualization Detectors Training Support vector machines Humans
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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