Type

Conference Proceedings

Authors

Alan F. Smeaton
Noel E. O'Connor
Kevin McGuinness
Gordon Keenan
Hyowon Lee
Gareth J. F. Jones
Daragh Byrne
Tomasz Adamek
Peter Wilkins

Subjects

Computer Science

Topics
feature extraction information storage and retrieval systems machine learning logistic regression multi modal digital video support vector machines low level visual features

K-Space at TRECVid 2007 (2007)

Abstract In this paper we describe K-Space participation in TRECVid 2007. K-Space participated in two tasks, high-level feature extraction and interactive search. We present our approaches for each of these activities and provide a brief analysis of our results. Our high-level feature submission utilized multi-modal low-level features which included visual, audio and temporal elements. Specific concept detectors (such as Face detectors) developed by K-Space partners were also used. We experimented with different machine learning approaches including logistic regression and support vector machines (SVM). Finally we also experimented with both early and late fusion for feature combination. This year we also participated in interactive search, submitting 6 runs. We developed two interfaces which both utilized the same retrieval functionality. Our objective was to measure the effect of context, which was supported to different degrees in each interface, on user performance. The first of the two systems was a ‘shot’ based interface, where the results from a query were presented as a ranked list of shots. The second interface was ‘broadcast’ based, where results were presented as a ranked list of broadcasts. Both systems made use of the outputs of our high-level feature submission as well as low-level visual features.
Collections Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> Subject = Computer Science
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: Centre for Digital Video Processing (CDVP)
Ireland -> Dublin City University -> Subject = Computer Science: Information storage and retrieval systems
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: Adaptive Information Cluster (AIC)
Ireland -> Dublin City University -> Subject = Computer Science: Digital video
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres

Full list of authors on original publication

Alan F. Smeaton, Noel E. O'Connor, Kevin McGuinness, Gordon Keenan, Hyowon Lee, Gareth J. F. Jones, Daragh Byrne, Tomasz Adamek, Peter Wilkins

Experts in our system

1
Alan F. Smeaton
Dublin City University
Total Publications: 450
 
2
Noel E. O'Connor
Dublin City University
Total Publications: 420
 
3
Kevin McGuinness
Dublin City University
Total Publications: 65
 
4
Gareth J. F. Jones
Dublin City University
Total Publications: 265
 
5
Daragh Byrne
Dublin City University
Total Publications: 51