Diversity of color vision based on the physiological individual differences

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K12017
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 61060:Kansei informatics-related
• Research Institution: Yamagata University
• Principal Investigator: Yamauchi Yasuki 山形大学, 大学院理工学研究科, 教授 (60550994)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 色覚 / 等色関数 / 個人差 / 心理物理学

Outline of Final Research Achievements

Due to the constraint of the research activities caused by COVID-19, the activities were focused on the improvement of the measurement of the color matching functions (CMFs), mainly to seek the efficient and easy method of the measurement, and to find an alternative index that well describe the individual differences in CMFs.
For the alternative index, B/L, which has been reported to have large individual differences especially in short-wavelength range, was measured in the same dominant wavelength as CMFs. Certain levels of correlations were observed, but the extent of the correlation was not so high.
In order to conduct an efficient and easy experiment, the selection method was proposed, in which the subject could choose the best matched color among the multiple candidate color sets. The reduction time was about 40% compared with the conventional adjustment method of three primaries.

Free Research Field

感性情報学

Academic Significance and Societal Importance of the Research Achievements

等色関数の簡便な測定方法を提案し，その有効性を示すことができたことは，従来複雑な測定装置を用いて被験者の熟練や所要時間が長い実験が不要になり，数多くの被験者のデータを収集しやすくなったことは学術的意義があることである．等色関数に代わり色の見えの個人差を表す指標を簡易な心理物理実験で行えれば，個人ごとのカラーマネージメントを行うことができれば，さらに高画質な色再現技術が市場に導入可能であり社会的意義も大きいと思われる．本研究ではその可能性までは示すことができたが，確固たるデータの提示までには至らなかった．