Virtual colonoscopy on powerful workstations has the distinct advantage of interactive navigation, as opposed to passive viewing of cine loops or pre-computed movies. Because of the prohibitive cost of hardware, only passive displays have been feasible for the wide-scale deployment required for mass screening. The purpose of our work is to compare low-cost commodity hardware as an effective too...

BACKGROUND The Ralph Lauren Cancer Center implemented patient navigation programs in sites across the United States building on the model pioneered by Harold P. Freeman, MD. Patient navigation targets medically underserved with the objective of reducing the time interval between an abnormal cancer finding, diagnostic resolution, and treatment initiation. In this study, the authors assessed the ...

New low-cost commercially available bottom-lock doppler sonars can augment or replace the acoustic timeof-flight navigation systems commonly employed for threedimensional underwater robot vehicle navigation. This paper first reviews conventional techniques for underwater vehicle navigation, and describes a doppler-based navigation system recently developed by the authors. Second, we identify pr...

The Federal Aviation Administration is leading the National Airspace System modernization effort, in part, by supplanting traditional air traffic services with the Global Positioning System (GPS) aided by the Wide and Local Area Augmentation Systems (WAAS & LAAS). Making GPS the primary-means of navigation will enhance safety, flexibility and efficiency of operations for all aircraft ranging fr...

This paper considers the problem of indoor navigation by means of low-cost mobile devices. The required accuracy, the low reliability of low-cost sensor measurements and the typical unavailability of the GPS signal make indoor navigation a challenging problem. In this paper, a particle filtering approach is presented in order to obtain good navigation performance in an indoor environment: the p...

Global Navigation Satellite Systems (GNSS), such as the Global Positioning System (GPS), have been widely utilized and their applications are becoming popular, not only in military or commercial applications, but also for everyday life. Although GPS measurements are the essential information for currently developed land vehicle navigation systems (LVNS), GPS signals are often unavailable or unr...

Navigation algorithms integrating measurements from multi-sensor systems overcome the problems that arise from using GPS navigation systems in standalone mode. Algorithms which integrate the data from 2D low-cost reduced inertial sensor system (RISS), consisting of a gyroscope and an odometer or wheel encoders, along with a GPS receiver via a Kalman filter has proved to be worthy in providing a...