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Development of the imaging system based on mesopic vision

Research Project

Project/Area Number 18560031
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied optics/Quantum optical engineering
Research InstitutionChiba University

Principal Investigator

YAGUCHI Hirohisa  Chiba University, Graduate School of Advanced Integration Sciences, Professor (30134844)

Co-Investigator(Kenkyū-buntansha) MIZOKAMI Yoko  Chiba University, Graduate School of Advanced Integration Sciences, Assistant Professor (40436340)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥2,740,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywordsmesonic vision / color reproduction / color appearance
Research Abstract

The purpose of this study is to develop the imaging system for mesopic color appearance reproduction. We used an digital camera as an input device and various displays such as the CRT display and the LCD display and even hardcopies as output devices.
Human visual system covers a wide range illuminance range from 10^5lx to 10^<-3>lx. This wide dynamic range is achieved with two kinds of photoreceptors in the retina, rods and cones. There are illuminance levels where both rods and cones are active. We have already measured color appearance of color chips under those illuminance levels. Color appearance in mesopic vision differs from that in photopic or scotopic vision. In the present study, we developed the mesopic color appearance model. We compared the real image under any illuminance and the imaginary image predicted by our model to evaluat the performance of our model.
Finally we proposed the method to get cone stimulus values and rod stimulus values from the output of the conventional digital camera. The colorimetric calibration was done using a lot of color test charts. The accuracy of the calibration was less than 3 in color difference ΔE^* . Then, we propose an imaging system that provides color appearance of any natural scene under any illuminance level. We also applied the spatial frequency characteristics of human vision to the mesopic imaging system.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (12 results)

All 2008 2007 2006

All Journal Article (7 results) Presentation (2 results) Book (3 results)

  • [Journal Article] カラーユニバーサルデザインと視覚2008

    • Author(s)
      矢口博久
    • Journal Title

      光技術コンタクト 46

      Pages: 14-19

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Color universal design and human vision2008

    • Author(s)
      Hirohisa Yaguchi
    • Journal Title

      Optical and Electro-Optical Engineering Contact Vol. 531, No. 2

      Pages: 50-55

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] カラーユニバーサルデザインと視覚2008

    • Author(s)
      矢口 博久
    • Journal Title

      光技術コンタクト 46

      Pages: 14-19

    • Related Report
      2007 Annual Research Report
  • [Journal Article] LED照明下での色の見え2007

    • Author(s)
      矢口博久
    • Journal Title

      日本色彩学会誌 31

      Pages: 112-115

    • NAID

      110007029336

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Color appearance of objects illuminated with white LED light sources2007

    • Author(s)
      Hirohisa Yaguchi
    • Journal Title

      Journal of the Color Science Association of Japan Vol. 31, No. 2

      Pages: 112-115

    • NAID

      110007029336

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] LED照明下での色の見え2007

    • Author(s)
      矢口 博久
    • Journal Title

      日本色彩学会誌 31

      Pages: 112-115

    • NAID

      110007029336

    • Related Report
      2007 Annual Research Report
  • [Journal Article] カラーアピアランスモデルと国際標準化動向2006

    • Author(s)
      矢口博久
    • Journal Title

      画像電子学会誌 35・5

      Pages: 955-958

    • NAID

      10018479450

    • Related Report
      2006 Annual Research Report
  • [Presentation] コントラストを考慮した薄明視の見えのシミュレーション2007

    • Author(s)
      永峯翔、矢口博久、溝上陽子
    • Organizer
      日本視覚学会2007年夏季大会
    • Place of Presentation
      豊橋
    • Year and Date
      2007-07-23
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Simulation of appearance in mesopic vision based on contrast sensitivity2007

    • Author(s)
      Sho Nagamine, Hirohisa Yaguchi and Yoko Mizokami
    • Organizer
      2007 Summer Meeting of the Vision Society of Japan
    • Place of Presentation
      Toyohashi, Japan
    • Year and Date
      2007-07-23
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 眼・色・光2007

    • Author(s)
      矢口博久 他
    • Total Pages
      210
    • Publisher
      日本印刷技術協会
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] JAGAT2007

    • Author(s)
      Hirohisa Yaguchi, et. al.
    • Total Pages
      210
    • Publisher
      Eye, Color and Light
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 眼・色・光2007

    • Author(s)
      矢口 博久, 他
    • Total Pages
      210
    • Publisher
      日本印刷技術協会
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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