Stephen B. Webb

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We introduce the publicly available Open Development for Video Surveillance (ODViS) system that is specifically designed to support ongoing research in tracking and video surveillance. The system provides researchers with the ability to prototype tracking and event recognition techniques, to construct and manage ground truth data sets, and to evaluate the(More)
Front-projection display environments suffer from a fundamental problem: users and other objects in the environment can easily and inadvertently block projectors, creating shadows on the displayed image. We introduce a technique that detects and corrects transient shadows in a multi-projector display. Our approach is to minimize the difference between(More)
Imagine visiting a museum and being asked to view the latest exhibit through a 20-inch window. Museum curators will gladly maneuver items to any position you ask, but visualization is always limited to the window. Such is the current state of digital libraries. Digital libraries house media of ever-increasing complexity, from models of statues to virtual(More)
Front-projection displays are a cost-effective and increasingly popular method for large format visualization and immersive rendering of virtual models. New approaches to projector tiling, automatic calibration, and color balancing have made multiprojector display systems feasible without undue infrastructure changes and maintenance. As a result,(More)
Front-projection display systems suffer from a fundamental problem: the user can easily and inadvertently block the projector, creating shadows. The framework we present in this paper enables a front-projected display system to solve this problem and remove display surface shadows in real-time. Shadows are an example of radiometric inconsistencies, which(More)
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