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Formalization of opportunistic switching for context-adaptive vision systems

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2 Author(s)
Lombardi, P. ; Dip. Informatica e Sistemistica, Pavia Univ., Italy ; Zavidovique, B.

Computer systems operating in close contact with humans today rely on machine vision as a favorite source of perceptive information. However, images contain massive amount of useless information surrounding the few meaningful signals. Extracting such signals with reliability is a task far out of grasp for today off-the-shelf processors. Reliability could be pursued by adding observing modalities computing in parallel and then fusing their outputs. But this technique collides with real-time constraints. An alternative consists in inserting a priori knowledge on the operative "context" and adding expectations on object appearances. Contextual information can provide the basis for selecting interesting signals more efficiently. If the "context" is known, a system can employ only those observing modalities that prove better fitted to the current situation, and "switch" to them opportunistically. In this paper we develop a framework for representing context evolution and supporting a "contextual switching" of active operators.

Published in:

Systems, Man and Cybernetics, 2004 IEEE International Conference on  (Volume:7 )

Date of Conference:

10-13 Oct. 2004

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