Comparison of Different U. C. S. by Using MacAdam Ellipses and Munsell Scales

Abstract

Comparison of seven different systems of U. C. S. is made, the systems concerned being MacAdam's (u, v, ), N. B. S (α, β), Richter-Adams projective diagram (M₁, M₂), the new projective diagram, Adams modified root coordinate, Cube-root coordinate and Adams chromatic value diagram. For micro color differences MacAdam ellipses and for macro color differences Munsell scales are used. The new projective diagram is found appropriate for U. C. S., for it explains satisfactorily both micro and macro color differences and is of 0-1-0 in luminosity coefficients.