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The increased popularity of wireless networks has enabled the development of localization techniques that rely on WiFi signal strength. These systems are cheap, effective, and require no modifications to the environment. In this paper, we present a WiFi localization algorithm that generates WiFi maps using Gaussian process regression, and then estimates the(More)
— Understanding objects in video data is of particular interest due to its enhanced automation in public security surveillance as well as in traffic control and pedestrian flow analysis. Here, a system is presented which is able to detect and classify people and vehicles outdoors in different weather conditions using a static camera. The system is capable(More)
—MAPS (Multi-Agent Planning System) is a system for multi-agent coordination that has been developed in the robot soccer domain. It uses potential elds to model the environment and provide directives for the robots. The key feature that enables successful coordination is the use of a shared world model. This paper describes MAPS and demonstrates it as a(More)
This paper reports work on the automation of a hot metal carrier, which is a 20 tonne forklift-type vehicle used to move molten metal in aluminium smelters. To achieve efficient vehicle operation, issues of autonomous navigation and materials handling must be addressed. We present our complete system and experiments demonstrating reliable operation. One of(More)
Reliable real-time localization is a key component of autonomous industrial vehicle systems. We consider the problem of using on-board vision to determine a vehicle's pose in a known, but non-static, environment. While feasible technologies exist for vehicle localization, many are not suited for industrial settings where the vehicle must operate dependably(More)
Much of the current research in human-robot interaction is concerned with single systems and single or few users. These systems and their interfaces are generally tightly-coupled and well-defined. For large-scale human-robot applications, the systems may be unknown prior to designing the interface for potential human interaction. This presents a difficult(More)
This paper reports work involved with the automation of a hot metal carrier - a 20 tonne forklift-type vehicle used to move molten metal in aluminium smelters. To achieve efficient vehicle operation, issues of autonomous navigation and materials handling must be addressed. We present our complete system and experiments demonstrating reliable operation. One(More)
This paper addresses issues in developing a coordination system for mobile robots in a hostile environment. Sharing a common representation of the environment improves the ability to plan future environment states. It is difficult to make plans in hostile environments, and a robust method must be used if coordination is required between the robots to carry(More)
We propose a simple, reactive method for multiple robots carrying out sequential low-visibility navigation in the presence of an observer. Initially, the robots have no map of the environment but know the locations of the observer and goal. They generate an occupancy grid representation of the environment which is modeled using potential fields with(More)
Remaining elusive while navigating to a goal in a dynamic environment containing an observer requires taking advantage of opportunistic cover as it occurs. A reactive navigation approach is needed that recognizes the utility of environment features in offering protective cover. We present an approach that allows stealthy traverses in unknown environments(More)