A Study on Image Processing for Action Assistance of Visually Impaired Humans with a Smartphone

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Other Title
  • スマートフォンを用いた画像処理による視覚障碍者行動支援方式の検討(学生研究発表会)
  • スマートフォンを用いた画像処理による視覚障碍者行動支援方式の検討
  • スマートフォン オ モチイタ ガゾウ ショリ ニ ヨル シカクショウガイシャ コウドウ シエン ホウシキ ノ ケントウ

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Abstract

In this article, a determination method of distance and directions of textured pavement blocks (TPB) on a smartphone is proposes. Based on previously proposed TPB position determination method, longest parallel line pairs are determined from extracted edge pixels. Then, the number of pixels between the parallel lines is calculated with distance formula. Finally, the distance from camera position to the parallel lines is calculated comparing the number and a pixels-distance reference table created in advance. Experiments for 1, 3, 5m distance samples with an Android smartphone show that distance is determined with about 3-30% error rates.

Journal

  • ITE Technical Report

    ITE Technical Report 38.9 (0), 81-84, 2014

    The Institute of Image Information and Television Engineers

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