A cloud-based outdoor assistive navigation system for the blind and visually impaired

Anna N. Lapyko, Li Ping Tung, Bao-Shuh Lin 

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

Safe navigation in non-familiar outdoor environments is a challenging activity for the blind and visually impaired (BVI) people. This work introduces a cloud-based outdoor assistive navigation system (COANS) for BVI people. The main goal of the system is to provide easy street navigation and help to make outdoor walk in non-familiar environment less stressful. Hardware part from the user-side includes an android-based mobile phone and an external low-cost L1 GPS receiver to improve position accuracy. Applying the technique known as Real Time Kinematic (RTK) ameliorates the issue of the user position estimation. Interaction between the application and the user is based on voice commands (user-side) and voice notifications (system-side), together with the user-friendly "shaking" and "swiping" commands. The test scenarios for the system include traffic light status detection, zebra crossing path detection, and a bench discovering within a short distance from the user. In order to evaluate overall system performance, two groups of tests have been conducted. One is for GPS location accuracy from RTKLib and the other is for server-client communication time. It shows the usability of the proposed COANS system.

Original languageEnglish
Title of host publication2014 7th IFIP Wireless and Mobile Networking Conference, WMNC 2014
PublisherIEEE Computer Society
ISBN (Print)9781479930609
DOIs
StatePublished - 1 Jan 2014
Event7th IFIP Wireless and Mobile Networking Conference, WMNC 2014 - Vilamoura, Portugal
Duration: 20 May 201422 May 2014

Publication series

Name2014 7th IFIP Wireless and Mobile Networking Conference, WMNC 2014

Conference

Conference7th IFIP Wireless and Mobile Networking Conference, WMNC 2014
CountryPortugal
CityVilamoura
Period20/05/1422/05/14

Keywords

  • assistive technology
  • cloud
  • mobile
  • navigation
  • RTK
  • visually impaired

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