ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume II-3/W5
https://doi.org/10.5194/isprsannals-II-3-W5-179-2015
https://doi.org/10.5194/isprsannals-II-3-W5-179-2015
19 Aug 2015
 | 19 Aug 2015

OBSTACLE CHARACTERIZATION IN A GEOCROWDSOURCED ACCESSIBILITY SYSTEM

H. Qin, A. O. Aburizaiza, R. M. Rice, F. Paez, and M. T. Rice

Keywords: Transitory Obstacles, Accessibility, Geocrowdsourcing, Data Quality, Semantics

Abstract. Transitory obstacles – random, short-lived and unpredictable objects – are difficult to capture in any traditional mapping system, yet they have significant negative impacts on the accessibility of mobility- and visually-impaired individuals. These transitory obstacles include sidewalk obstructions, construction detours, and poor surface conditions. To identify these obstacles and assist the navigation of mobility- and visually- impaired individuals, crowdsourced mapping applications have been developed to harvest and analyze the volunteered obstacles reports from local students, faculty, staff, and residents. In this paper, we introduce a training program designed and implemented for recruiting and motivating contributors to participate in our geocrowdsourced accessibility system, and explore the quality of geocrowdsourced data with a comparative analysis methodology.