1960 年 29 巻 7 号 p. 475-480
To the six UCS systems already dealt with, four more systems represented by the chromatic value diagram of Adams and the color spaces of Munsell, Wright and MacAdam reported by Farnsworth are added. From the result of comparison made among these ten systems by using MacAdam ellipses and Munsell scales, the authors' new projective diagram (q1, q2) is found to be a good uniform chromaticity scale diagram.