Generalized best-first search strategies and the optimality of A*
Journal of the ACM (JACM)
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International Journal of Human-Computer Studies - Special issue: 1969-1999, the 30th anniversary
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Data requirements and a spatial database for personalized wheelchair navigation
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Data collection system for the navigation of wheelchair users: a preliminary report
ICCSA'10 Proceedings of the 2010 international conference on Computational Science and Its Applications - Volume Part III
Entertainment technology transfer toward serious use
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Health-optimal routing in pedestrian navigation services
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Proceedings of the Sixth ACM SIGSPATIAL International Workshop on Computational Transportation Science
Proceedings of the Sixth ACM SIGSPATIAL International Workshop on Computational Transportation Science
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Wheelchair users are confronted with many outdoor obstacles in everyday travel that can make the task arduous and unsafe, especially in unfamiliar environments. However, if wheelchair users are provided with routes that can safely, accurately and efficiently guide them to their destinations, then the difficulty and danger associated with traveling might be significantly reduced. In this article, we present a routing method suitable for wheelchair users by taking into account sidewalk obstacles such as slope, steps, sidewalk condition and sidewalk traffic as are preferred by users. Our method calculates impedance scores for each sidewalk segment, which are then used to determine an optimal route between any given pair of origin-destination addresses in a sidewalk network. We first discuss sidewalk network parameters and a spatial database suitable for wheelchair navigation. Then we discuss our personalised routing approach. We also describe three methods to weight the impedance level of each sidewalk segment and compare the effectiveness of each method through experimentation using the sidewalk network for the University of Pittsburgh campus area.