Construction of color representation models in the human visual system based on classification image method

• Project/Area Number: 24700206
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Sensitivity informatics/Soft computing
• Research Institution: Yamagata University (2013-2014); Toyohashi University of Technology (2012)
• Principal Investigator: TAKEHIRO Nagai 山形大学, 理工学研究科, 准教授 (40549036)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 色覚 / 逆相関法 / 心理物理学 / 色彩科学 / 色覚情報処理 / 色彩工学

Outline of Final Research Achievements

Our aim was to construct numerical models of color representation in the human visual system using a psychophysical reverse correlation method. The results of our project are as follows. 1. We established a method to estimate color representation properties in the human visual system that is based on an analysis of a huge number of observers’ responses for randomly colored stimuli using color representation models. 2. Our results suggested that rather low-level opponent color representation contributes to color contrast perception using the method above. 3. Our results suggested that different color representations are involved in different tasks of color perception even for an identical color stimulus.

Research Products

• [Journal Article] Reverse correlation analysis of chromatic contrast perception based on chromatic mechanism models (2014)
  • Author(s): Tomoharu Sato, Takehiro Nagai, Shigeki Nakauchi
  • Journal Title: Optical review Volume: 21 Issue: 5 Pages: 526-540
  • DOI: 10.1007/s10043-014-0083-0
  • NAID: 110009686753
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 色覚メカニズムモデルに基づく色コントラスト知覚特性の逆相関解析 (2013)
  • Author(s): 佐藤智治，永井岳大，中内茂樹
  • Journal Title: 映像情報メディア学会技術報告 Volume: 55 Pages: 13-16
• [Presentation] Dissociation of neutral chromatic points for color discrimination and color appearance under incomplete chromatic adaptation (2015)
  • Author(s): Tomoharu Sato, Takehiro Nagai, Ichiro Kuriki, Shigeki Nakauchi
  • Organizer: The 23rd symposium of the International Colour Vision Society
  • Place of Presentation: 東北大学（宮城県仙台市）
  • Year and Date: 2015-07-03 – 2015-07-07
• [Presentation] 明るさ方向のコントラスト順応に対する明るさと輝度の寄与の比較 (2015)
  • Author(s): 中山和輝，川島祐貴，山内泰樹，永井岳大
  • Organizer: 日本視覚学会2015年冬季大会
  • Place of Presentation: 工学院大学（東京都新宿区）
  • Year and Date: 2015-01-25
• [Presentation] 不完全順応における色の見えと色弁別の基準点 (2015)
  • Author(s): 佐藤智治，永井岳大，栗木一郎，中内茂樹
  • Organizer: 日本視覚学会2015年冬季大会
  • Place of Presentation: 工学院大学（東京都新宿区）
  • Year and Date: 2015-01-25
• [Presentation] 色覚メカニズムモデルに基づく色コントラスト知覚特性の逆相関解析
  • Author(s): 佐藤智治，永井岳大，中内茂樹
  • Organizer: 映像情報メディア学会HI研究会
  • Place of Presentation: 沖縄産業支援センター
• [Presentation] Chromatic signal detection on a heterochromatic texture with a color distribution away from an adaptation color
  • Author(s): Tomoharu Sato, Takehiro Nagai, Shigeki Nakauchi
  • Organizer: Vision Sciences Society 2012 Annual Meeting
  • Place of Presentation: Florida, U.S.A.