Optical flow based obstacle avoidance for the visually impaired

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dc.contributor.author Liyanage, DK en
dc.contributor.author Muthupoltotage, Udayangi en
dc.date.accessioned 2020-04-15T03:56:55Z en
dc.date.issued 2012-07-30 en
dc.identifier.isbn 9781467304269 en
dc.identifier.uri http://hdl.handle.net/2292/50393 en
dc.description.abstract Vision is a vital cue for human navigation. Thus, visually impaired people encounter many challenges in day-today travelling. Identifying and avoiding obstacles in the environment is the most crucial among them. To empower blind navigation, numerous electronic travel aids were created in the past few decades, by using various obstacle sensing technologies such as sonar, infrared, and stereo vision. However, optical flow estimations based navigation, which is heavily used by insects and experimented in the field of robotics, has not been used in them. This project aimed to evaluate the potential optical flow estimation based techniques has in guiding a visually impaired person to avoid obstacles using auditory and tactile feedback. To demonstrate the researched core concepts, a prototype consisting of a virtual reality world was designed and developed. It also employs an existing optical flow algorithm for motion estimation, other image processing techniques, speech synthesis for auditory feedback and embedded programming for tactile feedback. The modular design of the prototype enables it to be used either in simulation mode, or as a standalone application in a real world environment. This work demonstrates the attractive possibilities of using optical flow estimations for visually impaired navigation. © 2012 IEEE. en
dc.relation.ispartofseries BEIAC 2012 - 2012 IEEE Business, Engineering and Industrial Applications Colloquium en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Optical flow based obstacle avoidance for the visually impaired en
dc.type Conference Item en
dc.identifier.doi 10.1109/BEIAC.2012.6226068 en
pubs.begin-page 284 en
dc.rights.holder Copyright: The author en
pubs.end-page 289 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.elements-id 535260 en
pubs.org-id Business and Economics en
pubs.org-id Info Systems & Operations Mgmt en

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