BlindNav: A Smartphone Based Navigation System for the Visually Impaired
Keywords:
Indoor navigation, WiFi strength calculation, android, visually impaired, talk back feature, indoor mapsAbstract
Navigating in an indoor building and finding path to common locations is one of the primary c oncerns for visually challenged people. When the blind or visually impaired find themselves in an area they are not familiar with, they feel lost and their safety is at great risk. Current systems do not function in GPS-denied indoor environments and only do identification of particular landmarks encountered by user. As an attempt to address this problem, we present an indoor navigation system based on WiFi strength calculation which is easy to use and highly efficient. This paper discusses a smartphone based system „BlindNav‟ that provides voice based navigational assistance to the blind or visually impaired by informing the user about the current location, assisting in point-topoint navigation and employing audible interfaces. Our system is supplementary to other navigational aids such as canes, blind guide dogs and wheel chairs.
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