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Y. Nayatani (2003)
A modified opponent‐colors theory considering chromatic strengths of various huesColor Research and Application, 28
Y. Nayatani, Hideki Sakai (2006)
Clarification of differences between variable achromatic color and variable chromatic color methods in the Helmholtz–Kohlrausch effectColor Research and Application, 31
D. Nickerson, S. Newhall (1941)
Central Notations for ISCC-NBS Color NamesJournal of the Optical Society of America, 31
Kawasaki Kawasaki, Ohi Ohi (2000)
The transition of PCCS color chartJ Color Sci Assoc Jpn, 24
Y. Nayatani, Hideki Sakai (2007)
Proposal of a new concept for color‐appearance modelingColor Research and Application, 32
Y. Nayatani, Hitoshi Komatsubara (2005)
Relationships among chromatic tone, perceived lightness, and degree of vividnessColor Research and Application, 30
Y. Nayatani (2004)
Proposal of an opponent‐colors system based on color‐appearance and color‐vision studiesColor Research and Application, 29
Y. Nayatani (1997)
Simple estimation methods for the Helmholtz—Kohlrausch effectColor Research and Application, 22
Nayatani‐theoretical (NT) color order system is a Hue–Tone color order systems. It can be used for determining surface colors with the same Tone (equiperceived lightness and equiperceived chroma) irrespective of hues under reference illuminant. The fundamental structure of NT system uses Munsell attributes HV/C for the easiness of its use. Some deviations caused by the approximation on chroma scale are naturally expected in NT system, although the formula used for deriving equivalent lightness Veq has the same structure as that for deriving L*eq using the corresponding CIELUV formula. The present article discusses the degree of approximation, and confirms the goodness of approximation. NT system can be used as it is for the field of artistic color design (complete accuracy is not required). The corrections, however, should be introduced in NT system, when higher accuracy is required. © 2007 Wiley Periodicals, Inc. Col Res Appl, 32, 230–233, 2007
Color Research & Application – Wiley
Published: Jun 1, 2007
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