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Full-Text Articles in Physical Sciences and Mathematics
Touch-Screen Technology For The Dynamic Display Of 2d Spatial Information Without Vision: Promise And Progress, Roberta L. Klatzky, Nicholas A. Giudice, Christopher R. Bennett, Jack M. Loomis
Touch-Screen Technology For The Dynamic Display Of 2d Spatial Information Without Vision: Promise And Progress, Roberta L. Klatzky, Nicholas A. Giudice, Christopher R. Bennett, Jack M. Loomis
Spatial Information Science and Engineering Faculty Scholarship
Many developers wish to capitalize on touch-screen technology for developing aids for the blind, particularly by incorporating vibrotactile stimulation to convey patterns on their surfaces, which otherwise are featureless. Our belief is that they will need to take into account basic research on haptic perception in designing these graphics interfaces. We point out constraints and limitations in haptic processing that affect the use of these devices. We also suggest ways to use sound to augment basic information from touch, and we include evaluation data from users of a touch-screen device with vibrotactile and auditory feedback that we have been developing, …
Vertical Color Maps: A Data Independent Alternative To Floor Plan Maps, Alexander Salveson Nossum, Nicholas A. Giudice, Hengshan Li
Vertical Color Maps: A Data Independent Alternative To Floor Plan Maps, Alexander Salveson Nossum, Nicholas A. Giudice, Hengshan Li
Spatial Information Science and Engineering Faculty Scholarship
Location sharing in indoor environments is limited by the sparse availability of indoor positioning and lack of geographical building data. Recently, several solutions have begun to implement digital maps for use in indoor space. The map design is often a variant of floor-plan maps. Whereas massive databases and GIS exist for outdoor use, the majority of indoor environments are not yet available in a consistent digital format. This dearth of indoor maps is problematic, as navigating multistorey buildings is known to create greater difficulty in maintaining spatial orientation and developing accurate cognitive maps. The development of standardized, more intuitive indoor …
Indoor Inertial Waypoint Navigation For The Blind, Timothy H. Riehle, Shane M. Anderson, Patrick A. Lichter, William E. Whalen, Nicholas A. Giudice
Indoor Inertial Waypoint Navigation For The Blind, Timothy H. Riehle, Shane M. Anderson, Patrick A. Lichter, William E. Whalen, Nicholas A. Giudice
Spatial Information Science and Engineering Faculty Scholarship
Indoor navigation technology is needed to support seamless mobility for the visually impaired. This paper describes the construction and evaluation of an inertial dead reckoning navigation system that provides real-time auditory guidance along mapped routes. Inertial dead reckoning is a navigation technique coupling step counting together with heading estimation to compute changes in position at each step. The research described here outlines the development and evaluation of a novel navigation system that utilizes information from the mapped route to limit the problematic error accumulation inherent in traditional dead reckoning approaches. The prototype system consists of a wireless inertial sensor unit, …