서로 다른 두 개의 LCD에서의 CIE 색도 불일치 - 메타메리즘 현상을 중심으로

Abstract

Recently, various studies have observed the phenomenon that the two colors having the same CIE 1931 XYZ tristimulus values on two different displays are perceived as different colors. This study conducted a color matching experiment at a 4° viewing angle using two LCD displays with different spectral characteristics followed. Participants performed three color matching experiments: two adjustment methods and one color selection method. The results showed that although there was an observer variability of 2.78±1.96 △ESUB00/SUB, it was confirmed that the CIE colorimetric mismatch magnitude was approximately twice as large as the observer variability magnitude; 5.49±2.27 △ESUB00/SUB. Based on the color matching experiment results, the color appearance experiment which evaluates hue and color difference was conducted. The results showed that the results of the color matching experiment and the color appearance experiment were consistent. For the colors matched by each individual, the participants responded that colors were neutral colors which felt a little or no hue, and the color difference with the reference stimulus was low. This study confirmed that CIE 1931 color matching function failed to explain the color matching results, and research on new color matching functions considering human physiological characteristics is needed.