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One of the unique applications of Mixed and Augmented Reality (MR / AR) systems is that hidden and occluded objects can be readily visualized. We call this specialized use of MR/AR, Obscured Information Visualization (OIV). In this paper, we describe the beginning of a research program designed to develop such visualizations through the use of principles(More)
In large distributed corporations, distributed design review offers the potential for cost savings, reduced time to market, and improved efficiency. It also has the potential to improve the design process by enabling wider expertise to be incorporated in design reviews. This paper describes the integration of several components to enable distributed virtual(More)
We describe techniques for coordinating the actions of large numbers of small-scale robots to achieve useful large-scale results in surveillance, reconnaissance, hazard detection, and path finding. We exploit the biologically inspired notion of a “virtual pheromone,” implemented using simple transceivers mounted atop each robot. Unlike the chemical markers(More)
From a general cognitive perspective, decision making is the process of selecting a choice or course of action from a set of alternatives. A large number of time critical decision making models have been developed over the course of several decades. This paper reviews both the underlying cognitive processes and several decision making models. In the first(More)
One of the primary hurdles to effectively evaluating adaptive software is that its very use alters the system from one moment to the next. Here, we developed and implemented an empirical-evaluation methodology that was successfully tested on an adaptive, web-based collaboration tool. Subjects participated in an "open-book" exam, spending limited amounts of(More)
Human interaction with large numbers of robots or distributed sensors presents a number of difficult challenges including supervisory management, monitoring of individual and collective state, and apprehending situation awareness. A rich source of information about the environment can be provided even with robots that have no explicit representations or(More)
This paper describes a 2D videoconferencing system with eye gaze correction. Tracking the eyes and warping the eyes appropriately each frame appears to create natural eye contact between users. The geometry of the eyes as well as the displacement of the camera with the remote user's image determines the warp. We implement this system within software, not(More)
We describe and evaluate a new tracking concept for outdoor Augmented Reality. A few mobile beacons added to the environment correct errors in head-worn inertial and GPS sensors. We evaluate the accuracy through detailed simulation of many error sources. The most important parameters are the errors in measuring the beacon and user’s head positions, and the(More)
As organizations continue to grow more complex, people have increasing difficulty remaining aware of others whose work could impact their own. Despite the rapid proliferation of our communication networks, we often hear the complaint “the right hand doesn’t know what the left hand is doing.” This is a particularly important issue within large organizations(More)