Pedestrian Dead Reckoning (PDR) is the process of calculating one's current location by using previously known position, and advancing that position over time established or estimated speeds trajectories (or alternatively stride lengths directions). PDR plays an important role in modern life, including tracking locations people objects whenever GPS not available. Self-contained systems do requi...

INTRODUCTION Animal travel speed is an ecologically significant parameter, with implications for the study of energetics and animal behaviour. It is also necessary for the calculation of animal paths by dead-reckoning. Dead-reckoning uses heading and speed to calculate an animal's path through its environment on a fine scale. It is often used in aquatic environments, where transmission telemetr...

This dissertation presents three separate–but related–contributions to the art of underwater navigation. These methods may be used in postprocessing with a human in the loop, but the overarching goal is to enhance vehicle autonomy, so the emphasis is on automated approaches that can be used in realtime. The three research threads are: i) in situ navigation sensor alignment, ii) dead reckoning t...

Stampede is a parallel programming system to support computationally demanding applications including interactive vision, speech and multimedia collaboration. The system alleviates concerns such as communication, synchronization, and buffer management in programming such realtime stream-oriented applications. Threads are loosely connected by channels which hold streams of items, each identified...

This article is the second of a series that discusses the deposition of airborne particles onto cleanroom surfaces. It investigates the relationship between the airborne concentration of a range of cumulative sizes of particles and the particle deposition rate (PDR) onto cleanroom surfaces, through knowledge of the deposition velocity of particles in air. The deposition velocity of a range of c...

This paper presents identifies and addresses the difficulties that arise from implementing visual information into the Simultaneous Localization and Mapping (SLAM) problem, with an emphasis for outdoor applications. Through identifying these problems, techniques for integrating the visual & navigation are proposed with results from their preliminary applications. Video data is gathered through ...