STUDY ON VISIBILITY EVALUATION OF CIRCULAR OBJECTS FOR COMMON TYPE PEOPLE

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  • KATO Yoko
    Dept. of Architecture and Building Engineering, School of Environment and Society, Tokyo Institute of Technology
  • NAKAMURA Yoshiki
    Dept. of Architecture and Building Engineering, School of Environment and Society, Tokyo Institute of Technology

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Other Title
  • 一般色覚者を対象とした円形視標の見やすさ評価に関する検討
  • 一般色覚者を対象とした円形視標の見やすさ評価に関する検討 : カラーユニバーサルデザインのための測光色コントラスト評価図を用いた視認性推定法に関する研究(その1)
  • イッパン シキカクシャ オ タイショウ ト シタ エンケイシヒョウ ノ ミヤスサ ヒョウカ ニ カンスル ケントウ : カラーユニバーサルデザイン ノ タメ ノ ソッコウショク コントラスト ヒョウカズ オ モチイタ シニンセイ スイテイホウ ニ カンスル ケンキュウ(ソノ 1)
  • －カラーユニバーサルデザインのための測光色コントラスト評価図を用いた視認性推定法に関する研究(その1)－
  • Study on visibility estimation method using luminous color C-A graph assuming color universal design, Part 1

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 Authors have argued that C-A graphs can estimate visibility using luminance images. In this study, a method of handling luminous color was suggested and visibility evaluation experiments using circular objects, varying luminance and chromaticity were conducted for the common color vision type. When the background chromaticity was D65 and the luminance contrast (LC ) was zero, visibilities of circular objects with greenish yellow to violet color decreased because of small-field tritanopia. As the object size was increased, visibilities improved while its trend was still observed. Specific chromaticities were difficult to be detected even if LC exceeds its visibility threshold values.

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