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VES: A Mixed-Reality Development Platform of Navigation Systems for Blind and Visually Impaired.

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Summary

The Virtually Enhanced Senses (VES) system offers a testbed for navigation aids for visually impaired individuals. This platform validates navigation system designs using simulated environments and sensory feedback before physical prototyping.

Keywords:
assistive technologyelectronic travel aidmixed realitynavigation systemvirtual realityvisually impairedwireless sensor actuator network

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Area of Science:

  • Human-Computer Interaction
  • Assistive Technology
  • Robotics

Background:

  • Navigation is a critical challenge for blind and visually impaired individuals.
  • Existing navigation systems often require extensive real-world testing, increasing development time and cost.

Purpose of the Study:

  • To introduce the Virtually Enhanced Senses (VES) system, a configurable wireless sensor-actuator network.
  • To provide a development and test-bench platform for navigation systems for the visually impaired.
  • To validate navigation system designs in virtual or mixed reality environments.

Main Methods:

  • Development of a wireless sensor-actuator network (VES) supporting haptic, acoustic, and proprioceptive feedback.
  • Integration of three state-of-the-art sensory substitution devices (SSDs), including 'The vOICe'.
  • Controlled manipulation of wireless communication parameters (data throughput, latency, packet loss).
  • Validation study involving 23 normal-sighted subjects testing visual-acoustic and visual-haptic SSDs.
  • Utilized a gaze-tracking utility adapted for SSDs.

Main Results:

  • The VES system successfully immersed users in virtual and mixed environments.
  • The platform allowed for the controlled testing of navigation system designs and the impact of wireless communication parameters.
  • Validation data was collected on spatial knowledge, mobility, and orientation performance.

Conclusions:

  • The VES system serves as a valuable tool for developing and testing navigation systems for the visually impaired.
  • It enables early-stage validation of navigation strategies and sensory substitution devices in simulated environments.
  • The platform facilitates research into the effects of varying communication parameters on user performance.