Transfer information enhancement with a 2-D tactile stimulator array for an acoustic vision substitute system

Hirofumi Taki, Toru Sato

Research output: Contribution to journalArticle

Abstract

Existing vision substitute systems have insufficient spatial resolution to provide environmental information. To present detailed spatial information, we propose two stimulation methods to enhance transfer information using a 2-D tactile stimulator array. First, stimulators are divided into several groups. Since each stimulator group is activated alternately, the interval of stimulations can be shortened to less than the twopoint discrimination threshold. In the case that stimulators are divided into two and four groups, the number of stimulators increases to twice and four times, respectively, that in the case of the two-point discrimination threshold. Further, a user selects the measurement range and the system presents targets within the range. The user acquires spatial information of the entire measurement area by changing the measurement range. This method can accurately present a range of targets. We examine and confirm these methods experimentally.

Original languageEnglish
Pages (from-to)808-815
Number of pages8
JournalIEICE Transactions on Information and Systems
VolumeE90-D
Issue number5
DOIs
Publication statusPublished - 2007 May

Keywords

  • Acoustic
  • Human interface
  • Hybrid method
  • Tactile
  • Vision substitute system

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence

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