Abstract
A crucial issue for research in video information retrieval (VIR) is the relationship between the tasks which VIR is supposed to support, and the techniques of representation, matching, display and navigation within the VIR system which are most appropriate for responding to those tasks. Within a general model of information retrieval as support for user interaction with information objects, this paper discusses how different tasks might imply the use of different techniques, and in particular, different modes of interaction, for “optimal” VIR within the different task environments. This analysis suggests that there will be no universally applicable VIR techniques, and that really effective VIR systems will necessarily be tailored to specific task environments. This in turn suggests that an important research agenda in VIR will be detailed task analyses, with concomitant specification of functionalities required to support people in accomplishment of their tasks.
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