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Development of color conversion techniques utilizing unknown properties of color difference perception in individuals with color vision deficiencies

Research Project

Project/Area Number 19H04197
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 61060:Kansei informatics-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Nagai Takehiro  東京工業大学, 工学院, 准教授 (40549036)

Co-Investigator(Kenkyū-buntansha) 須長 正治  九州大学, 芸術工学研究院, 教授 (60294998)
山内 泰樹  山形大学, 大学院理工学研究科, 教授 (60550994)
増田 修  新潟医療福祉大学, 医療技術学部, 教授 (90775967)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2022: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords色覚多様性 / 2色覚 / 色弁別 / 色差知覚 / 心理物理学 / 閾上色差 / 色覚異常 / 色知覚 / 色覚
Outline of Research at the Start

様々な色覚型の人に適切に情報を伝達できる色彩デザインをカラーユニバーサルデザイン(CUD)と呼ぶ。従来は、L錐体/M錐体に異常がある1型/2型色覚の方々の色弁別(細かい色を見分ける能力)に基づきCUDが設計されてきたが、近年の研究で色弁別は適切に行えても大きな色の差から感じる色差量が極端に小さい場合がある可能性が指摘されている.本研究の目的は,1型/2型色覚の大きな色差の知覚特性を定量的に明らかにするとともに,その特性に基づきCUDのための色変換技術を開発することである.

Outline of Final Research Achievements

This study aimed to develop a color conversion method for protanopes and deuteranopes by examining the color vision characteristics of different color vision types. We found that deuteranopes relied more on blue-yellow signals than luminance signals for color saliency judgments. We also found that higher-order color judgments, such as large color differences and preferences for color designs, were influenced by individuals’ experiences in visual color environments. These findings suggest that higher-order characteristics of color vision should be considered when developing a color conversion method for different types of color vision.

Academic Significance and Societal Importance of the Research Achievements

本研究課題では、少数派色覚の方々にも分かりやすい色使いの有効性を向上させるために、1型・2型色覚の色彩認知特性を多角的に検討した。実験では、1型・2型色覚の方々でも情報を正しく受け取れる輝度や青黄色の知覚を対象とした。結果として、色検出感度には3色覚と1型・2型色覚で差がなかったが、色の目立ち判断では2型色覚は青黄信号に依存しやすい可能性が示された。この結果は、少数派色覚のための色設計指針を策定する際の基礎的な知見となる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (18 results)

All 2023 2022 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] The dominating impacts of Helmholtz-Kohlrausch effect on color-induced glossiness enhancement2023

    • Author(s)
      Koizumi Kazuto、Nagai Takehiro
    • Journal Title

      Journal of Vision

      Volume: 23 Issue: 1 Pages: 11-11

    • DOI

      10.1167/jov.23.1.11

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Luminance dependency of perceived color shift after color contrast adaptation caused by higher-order color channels2022

    • Author(s)
      Nagai Takehiro、Kakuta Kana、Yamauchi Yasuki
    • Journal Title

      Journal of Vision

      Volume: 22 Issue: 7 Pages: 8-8

    • DOI

      10.1167/jov.22.7.8

    • Related Report
      2022 Annual Research Report
  • [Presentation] 有彩色色度が光沢感知覚に与える影響~自然な色分布を持つ物体表面における検討~2023

    • Author(s)
      小泉和人,永井岳大
    • Organizer
      日本視覚学会2023年冬季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 色弁別の知覚学習による様々な色知覚課題への波及効果2023

    • Author(s)
      堀内涼葉,永井岳大
    • Organizer
      日本視覚学会2023年冬季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 色弁別の知覚学習がカテゴリカル色知覚を変化させる2022

    • Author(s)
      堀内涼葉,永井岳大
    • Organizer
      日本色彩学会第53回全国大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ハイライト領域のHelmholtz-Kohlrausch効果が有彩色表面における光沢感を上昇させる2022

    • Author(s)
      小泉和人,永井岳大
    • Organizer
      映像情報メディア学会ヒューマンインフォメーション研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 1型・2型色覚の色知覚へのS錐体情報の寄与2022

    • Author(s)
      谷口正治,永井岳大
    • Organizer
      日本色彩学会色覚研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 色弁別の知覚学習による色カテゴリー境界の変化2022

    • Author(s)
      堀内涼葉,永井岳大
    • Organizer
      日本視覚学会2022年冬季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 有彩色付与による明るさ感の増加が光沢感増大に与える影響2022

    • Author(s)
      小泉和人,永井岳大
    • Organizer
      日本視覚学会2022年冬季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] What factors determine the effects of color on perceived gloss? -Helmholtz-Kohlrausch effect vs highlight-shading color contrast-2021

    • Author(s)
      Kazuto Koizumi, Yuma Watanabe, Takehiro Nagai
    • Organizer
      Vision Sciences Society 2021 Annual Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Color space distortion induced by perceptual learning on color discrimination2021

    • Author(s)
      鐘 依林,永井岳大
    • Organizer
      日本視覚学会2021年冬季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 1型・2型色覚の色知覚における輝度信号と色信号の役割について2021

    • Author(s)
      長澤一翔,田代知範,山内泰樹,永井岳大
    • Organizer
      日本視覚学会2021年冬季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 視対象の色差の大きさによる色差知覚の感度特性の変化2021

    • Author(s)
      伊藤雄謙,田代知範,山内泰樹,永井岳大
    • Organizer
      日本視覚学会2021年冬季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 色方向と空間周波数の組み合わせに対する随伴性色順応はあるか?2021

    • Author(s)
      角田佳菜,田代知範,山内泰樹,永井岳大
    • Organizer
      日本視覚学会2021年冬季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Manipulation of glossiness perception by contrast enhancement of high spatial frequency components2020

    • Author(s)
      Hiroaki Kiyokawa, Tomonori Tashiro, Yasuki Yamauchi, & Takehiro Nagai
    • Organizer
      Vision Sciences Society 2020 Annual Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sensitivity to different levels of supra-threshold color difference2019

    • Author(s)
      Yuken Ito, Tomoharu Sato, Tomonori Tashiro, Yasuki Yamauchi, & Takehiro Nagai
    • Organizer
      The 15th Asia-Pacific Conference on Vision
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Color adaptation to temporal color modulations along complicated loci in the chromaticity-luminance plane2019

    • Author(s)
      Kana Kakuta, Tomonori Tashiro, Yasuki Yamauchi, & Takehiro Nagai
    • Organizer
      The 15th Asia-Pacific Conference on Vision
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Color contrast adaptation to temporal variations on complex luminance-chromaticity loci2019

    • Author(s)
      Takehiro Nagai, Kana Kakuta, Tomonori Tashiro, & Yasuki Yamauchi
    • Organizer
      The 25th symposium of the International Colour Vision Society
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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