Thesis (M.Sc.)--Chulalongkorn University, 1999

To link the gap between physical and perceptual color parameter by deriving the quantitative visual scale of the word which express human color perception which using the twelve opponent word pairs and relevant to colorimetric values. The derivation of the visual assessment and colorimetric values establishes the color perception equation as a general equation, which CP CIE L*, C*, h = [{k1(L*-L*0)}2 + {k2(C*-C*0)}2]1/2 - k3, where CP represents the color perception values. It can analyse the colorimetric characteristic of the visual scale in CIE L*, C*, h color space and then obtain the color perception map. This diagram determines the relationship between the twelve opponent word pairs. The results are found to divide the opponent word pairs into three groups which are dominated by chroma, lightness and hue, respectively. Moreover, it is possible to predict the color perception values using the empirical equation.