Exploiting temporal discontinuities for event detection and manipulation in video streams

Authors:
Hugh Denman;Erika Doyle;Anil Kokaram;Daire Lennon;Rozenn Dahyot;Ray Fuller
Affiliations:
University of Dublin, Trinity College, Dublin, Ireland;University of Dublin, Trinity College, Dublin, Ireland;University of Dublin, Trinity College, Dublin, Ireland;University of Dublin, Trinity College, Dublin, Ireland;University of Dublin, Trinity College, Dublin, Ireland;University of Dublin, Trinity College, Dublin, Ireland
Venue:
Proceedings of the 7th ACM SIGMM international workshop on Multimedia information retrieval
Year:
2005

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Abstract

Discontinuities in any information bearing signal serve to represent much of the vital or interesting content in that signal. A sharp loud noise in a movie could be a gun, or something breaking. In sports like tennis, cricket or snooker/pool it would indicate a point scoring event. In both cases the discontinuity is likely to be semantically relevant without further inference being necessary, once a particular domain is adopted. This paper discusses the importance of temporal motion discontinuities in inferring events in visual media. Two particular application domains are considered: content based audio/video synchronisation and event spotting in observational Psychology.