Ben Avery

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Augmented reality x-ray vision allows users to see through walls and view real occluded objects and locations. We present an augmented reality x-ray vision system that employs multiple view modes to support new visualizations that provide depth cues and spatial awareness to users. The edge overlay visualization provides depth cues to make hidden objects(More)
This paper describes a new hybrid tracking system that integrates standard outdoor augmented reality trackers with a low cost indoor tracker based on the use of fiducial markers. We use multiple cameras, separate orientation sensing, and scene graph integration to improve on similar previous systems. This hybrid tracker allows applications to operate within(More)
The latest hardware available for creating playable augmented reality games is too expensive to be used in consumer-level products at the current time. Low-end hardware exists that is much cheaper, but the performance of these hardware components seems to be inadequate for use in AR games in their current state. This paper discusses the hardware options(More)
This paper describes the implementation of hybrid tracking software that is capable of operating both indoors and outdoors. Commercially available outdoor trackers are combined with an indoor tracker based on fiducial markers and video cameras. The position and orientation of the user's body is measured in physical world coordinates at all times, and(More)
We have developed a system built on our mobile AR platform that provides users with see-through vision, allowing visualization of occluded objects textured with real-time video information. We present a user study that evaluates the user's ability to view this information and understand the appearance of an outdoor area occluded by a building while using a(More)
We have developed an outdoor augmented reality game, Sky Invaders 3D, which is designed to be played by the game playing public. We conducted a user study to measure how much users enjoyed playing an outdoor AR game, and how intuitive it was. We compared 44 participants on one of two games, an outdoor AR game, or a desktop PC equivalent of the same game. We(More)
This paper describes techniques to allow both the visualization of hidden objects, and removal of real objects, for a mobile augmented reality user. A gesture based technique is also described which allows the user to select when to view occluded objects. By using the real-time modeling techniques of the Tinmith system, the user is able to create the(More)
We present a mobile tracking system for hands and arms capable of detecting the full range of motion, suitable for use in mobile augmented reality systems. The hand position is tracked using orientation sensors attached to the upper and forearms. Using two or more orientation sensors, the natural movements of the human arm can be captured relative to the(More)
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