Sound-aided Tracing System for Visually Impaired People

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  • 視覚障がい者のための誘導音を用いた線図形トレーシングシステム
  • シカク ショウガイシャ ノ タメ ノ ユウドウオン オ モチイタ セン ズケイ トレーシング システム

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Abstract

Barrier-free signs, such as a sound device on a traffic signaling mechanism or a Braille on a map,are widely used in a modern society for the benefit of the visually impaired people. This paper proposes a sound-aided tracing system with a mobile touch screen for understanding a structure of an image. The proposed system represents a structural feature of a line-drawing image with a guiding sound. The structural features are extracted from the image and guide sounds corresponding to the features are assigned to the pixels on the image. A prototype of the map guiding system has been implemented. The experimental results with the prototype have shown that the proposed system enables subjects to trace a correct route on the map, although there remain some usability improvements for practical use.

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