Type

Conference Proceedings

Authors

Peter Wilkins
Alan F. Smeaton
Sorin Sav
Noel E. O'Connor
Sinéad McGivney
Hyowon Lee
Gareth J. F. Jones
Cathal Gurrin
Colum Foley

Subjects

Computer Science

Topics
collaborative search semi automatic segmentation university digital video information storage and retrieval systems trecvid mean average precision dublin city

TRECVid 2005 experiments at Dublin City University (2005)

Abstract In this paper we describe our experiments in the automatic and interactive search tasks and the BBC rushes pilot task of TRECVid 2005. Our approach this year is somewhat different than previous submissions in that we have implemented a multi-user search system using a DiamondTouch tabletop device from Mitsubishi Electric Research Labs (MERL).We developed two versions of oursystem one with emphasis on efficient completion of the search task (Físchlár-DT Efficiency) and the other with more emphasis on increasing awareness among searchers (Físchlár-DT Awareness). We supplemented these runs with a further two runs one for each of the two systems, in which we augmented the initial results with results from an automatic run. In addition to these interactive submissions we also submitted three fully automatic runs. We also took part in the BBC rushes pilot task where we indexed the video by semi-automatic segmentation of objects appearing in the video and our search/browsing system allows full keyframe and/or object-based searching. In the interactive search experiments we found that the awareness system outperformed the efficiency system. We also found that supplementing the interactive results with results of an automatic run improves both the Mean Average Precision and Recall values for both system variants. Our results suggest that providing awareness cues in a collaborative search setting improves retrieval performance. We also learned that multi-user searching is a viable alternative to the traditional single searcher paradigm, provided the system is designed to effectively support collaboration.
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

Peter Wilkins, Alan F. Smeaton, Sorin Sav, Noel E. O'Connor, Sinéad McGivney, Hyowon Lee, Gareth J. F. Jones, Cathal Gurrin, Colum Foley

Experts in our system

1
Alan F. Smeaton
Dublin City University
Total Publications: 475
 
2
Noel E. O'Connor
Dublin City University
Total Publications: 449
 
3
Gareth J. F. Jones
Dublin City University
Total Publications: 297
 
4
Cathal Gurrin
Dublin City University
Total Publications: 206