Hue & Tone 130색의 색차 적정성 - 일본컬러디자인연구소의 시스템을 중심으로 (The Appropriateness of Color Difference in Hue & Tone 130 Colors - Focused on NCD(Nippon Color & Design Research Institute) System)

서지정보

· 발행기관 : 한국색채학회
· 수록지 정보 : 한국색채학회논문집 / 32권 / 2호 / 93 ~ 105페이지
· 저자명 : 주대원

초록

The system of NCD Hue & Tone 130 colors is one of the most popular color development methods used by designers.
Ensuring the appropriateness of color difference in the use of color may increase the level of trust in the color system.
However, until recently, there has been no study on whether the RGB data of the NCD system are have a color difference from sRGB for the Munsell notation standard. Therefore, this study aims to analyze whether the RGB data of NCD Hue & Tone 130 colors have some color difference with sRGB of Munsell notation standard and the color tolerance between them is appropriate. For the reliable color analysis, we used a website with excellent conversion to Yxy data of the Munsell color system and a color conversion system of BabelColor CT&A. The sRGB and L1*a1*b1* data were calculated on the basis of the Munsell notation of NCD Hue & Tone 130 colors. Then, the NCD RGB data were compared with the data converted to L2*a2*b2* and the color difference. At the same time, we analyzed whether each color difference of tones corresponds to the color tolerance range of CIELAB color system. The color distribution in L*a*b* color space was analyzed for visual color difference analysis of L1*a1*b1* and L2*a2*b2* data. The results of the study are as follows. First, to enhance digital utilization of the monitors based on the NCD Hue & Tone 130 colors, color management is required so that the RGB data does not to exceed C grade (dE * ab : 6.5∼13). If the RGB data are reset by referring to the sRGB according to the tone-specific Munsell notation, this problem can be solved to a certain degree. Second, since users may be limited to applying exact colors only with Munsell notation and RGB data, NCD could be more useful if it provides L*a*b in the relevant literature. Third, NCD Hue & Tone 130 colors should be optimized by modifying the variation of L*a*b values as a whole and finding a higher value in the direction of +a* color space.

영어초록

The system of NCD Hue & Tone 130 colors is one of the most popular color development methods used by designers.
Ensuring the appropriateness of color difference in the use of color may increase the level of trust in the color system.
However, until recently, there has been no study on whether the RGB data of the NCD system are have a color difference from sRGB for the Munsell notation standard. Therefore, this study aims to analyze whether the RGB data of NCD Hue & Tone 130 colors have some color difference with sRGB of Munsell notation standard and the color tolerance between them is appropriate. For the reliable color analysis, we used a website with excellent conversion to Yxy data of the Munsell color system and a color conversion system of BabelColor CT&A. The sRGB and L1*a1*b1* data were calculated on the basis of the Munsell notation of NCD Hue & Tone 130 colors. Then, the NCD RGB data were compared with the data converted to L2*a2*b2* and the color difference. At the same time, we analyzed whether each color difference of tones corresponds to the color tolerance range of CIELAB color system. The color distribution in L*a*b* color space was analyzed for visual color difference analysis of L1*a1*b1* and L2*a2*b2* data. The results of the study are as follows. First, to enhance digital utilization of the monitors based on the NCD Hue & Tone 130 colors, color management is required so that the RGB data does not to exceed C grade (dE * ab : 6.5∼13). If the RGB data are reset by referring to the sRGB according to the tone-specific Munsell notation, this problem can be solved to a certain degree. Second, since users may be limited to applying exact colors only with Munsell notation and RGB data, NCD could be more useful if it provides L*a*b in the relevant literature. Third, NCD Hue & Tone 130 colors should be optimized by modifying the variation of L*a*b values as a whole and finding a higher value in the direction of +a* color space.

참고자료

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