Analysis of the influence of ipRGC on perception of reproduced images on display device and its application

• Project/Area Number: 19K12038
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 61010:Perceptual information processing-related
• Research Institution: Chiba University
• Principal Investigator: Horiuchi Takahiko 千葉大学, 大学院工学研究院, 教授 (30272181)
• Co-Investigator(Kenkyū-buntansha): 田中 緑 千葉大学, 大学院国際学術研究院, 助教 (40780979)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: ipRGC / 色再現 / 視知覚 / ディスプレイ / 概日リズム / 視覚科学 / 心理物理実験 / 色知覚

Outline of Research at the Start

本研究では，将来の豊かな社会発展に寄与するために，産業応用を目指した独創的・先駆的な研究に取り組む．具体的には，これまで管理された実験室環境において実施されてきた視知覚実験を実生活空間へと展開し，一般の照明環境下に設置された種々のディスプレイを用いた視覚実験を丁寧に実施する．これらの実験結果を解析することによって，新しい視物質であるipRGCの影響を考慮した色再現モデルを構築する．さらに，標準化されているデバイス間のカラーマネージメントシステムとの互換目指したプロトタイプシステムの構築を通じて，カラー画像再現における産業界の次世代デファクトスタンダードとなる基盤を確立する．

Outline of Final Research Achievements

Color matching experiments were continuously conducted to analyze the effects of Intrinsically photosensitive retinal ganglion cells (ipRGCs) on the perception of reproduced images on a display set up in a natural environment. The results suggest that ipRGC affects color perception even in images on displays. Furthermore, by investigating the environment in relation to circadian rhythms, it was suggested that M1 ipRGC, a non-image forming function, may also affect color perception.

Academic Significance and Societal Importance of the Research Achievements

本研究によって，自然環境下に設置されたディスプレイ上においてもipRGC が色覚経路に寄与していることを示すデータが得られたことは，視覚科学の新たな学説のエビデンスとなるだけでなく，産業界のRGB の三刺激値で映像表現を行っている視覚メディアの分野において，より厳密な映像再現にはipRGCの吸収率を含めた表現が必要となることを意味しており，様々な社会実装に変革を及ぼす結果につながる．

Research Products

• [Journal Article] Preliminary Evidence for the Effect of Circadian Rhythms on Color Perception (2022)
  • Author(s): Kyosuke Ota, Midori Tanaka, Takahiko Horiuchi
  • Journal Title: Proceedings of the International Colour Association (AIC) Conference 2022 Volume: -
  • Peer Reviewed / Open Access
• [Journal Article] 視覚特性の個人差を考慮したipRGCが色弁別に与える影響の考察 (2022)
  • Author(s): 大津昌也，田中緑，堀内隆彦
  • Journal Title: 色彩学 Volume: 1
  • Peer Reviewed
• [Journal Article] Effect of ipRGC on Colour Perception of Display Device under Various Illuminants (2021)
  • Author(s): Kota Akiba, Midori Tanaka, Takahiko Horiuchi
  • Journal Title: Proceedings of the International Colour Association (AIC) Conference 2021 Volume: - Pages: 387-392
  • Peer Reviewed / Open Access
• [Journal Article] COLOR MATCHING CONSIDERATION ON THE EFFECT OF IPRGC FOR COLOR REPRODUCTION ON DISPLAY DEVICE (2020)
  • Author(s): Akiba K.、Tanaka M.、Horiuchi T.
  • Journal Title: Proc. 5th CIE Symposium on Colour and Visual Appearance Volume: - Pages: 1-6
  • DOI: 10.25039/x47.2020.po39
  • Peer Reviewed / Open Access
• [Journal Article] Experimental consideration on the effect of ipRGC for color reproduction on display device (2019)
  • Author(s): K.Akiba, M.Tanaka and T.Horiuchi
  • Journal Title: Proc. Midterm Meeting of the International Color Association Volume: - Pages: 1-4
  • Peer Reviewed / Open Access
• [Presentation] Preliminary Evidence for the Effect of Circadian Rhythms on Color Perception (2022)
  • Author(s): Kyosuke Ota, Midori Tanaka, Takahiko Horiuchi
  • Organizer: International Colour Association (AIC) Conference 2022
  • Int'l Joint Research
• [Presentation] 視覚特性の個人差を考慮したipRGCが色弁別に与える影響の考察 (2022)
  • Author(s): 大津昌也，田中緑，堀内隆彦
  • Organizer: 日本色彩学会第53回全国大会
• [Presentation] Effect of ipRGC on Colour Perception of Display Device under Various Illuminants (2021)
  • Author(s): Kota Akiba, Midori Tanaka, Takahiko Horiuchi
  • Organizer: International Colour Association (AIC) Conference 2021
  • Int'l Joint Research
• [Presentation] Color Matching Consideration on the Effect of IPRGC for Color Reproduction on Display Device (2020)
  • Author(s): K.Akiba, M.Tanaka and T.Horiuchi
  • Organizer: CIE 5th CIE Expert Symposium on Colour and Visual Appearance
  • Int'l Joint Research
• [Presentation] Experimental consideration on the effect of ipRGC for color reproduction on display device (2019)
  • Author(s): K.Akiba, M.Tanaka and T.Horiuchi
  • Organizer: Midterm Meeting of the International Color Association
  • Int'l Joint Research
• [Presentation] ipRGCがディスプレイの色知覚に与える影響 (2019)
  • Author(s): 秋葉航太，田中緑，堀内隆彦
  • Organizer: 日本色彩学会第50回全国大会
• [Remarks] 堀内研究室のWebサイト
  • URL: http://dippix.tp.chiba-u.jp/index.html
• [Remarks] 堀内研究室 -Research
  • URL: http://dippix.tp.chiba-u.jp/research/index.html
• [Remarks] 堀内・平井研究室 - Research
  • URL: http://dippix.tp.chiba-u.jp/research/index.html