Dynamic world models from ray-tracing

Context-aware computing systems demand an accurate and up-to-date world model which computationally represents the environment they oversee. Systems to date tend to have small-scale implementations with hand-programmed world models. In real environments, manual creation and maintenance of such model...

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Bibliographic Details
Main Authors: Harle, R.K., Hopper, A.
Format: Conference Proceeding
Language:English
Subjects:
Computational modeling
Context modeling
Context-aware services
Embedded computing
Information security
Particle measurements
Pervasive computing
Production systems
Ray tracing
Ubiquitous computing
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Summary:Context-aware computing systems demand an accurate and up-to-date world model which computationally represents the environment they oversee. Systems to date tend to have small-scale implementations with hand-programmed world models. In real environments, manual creation and maintenance of such models is infeasible. This work presents a method of using signals propagating in a multilateration positioning system to assist in creating and maintaining models of a dynamic world. It builds on a previous method for discovering objects in static environments. The methods are implemented and evaluated using a real positioning system. They are shown to build three-dimensional occupancy grids of indoor volumes, and have the capability of modifying those grids as time proceeds and the environment is reconfigured.
DOI:10.1109/PERCOM.2004.1276845