CIE標準觀測者 國際照明委員會(Commission International del’Eclairage,CIE) • • CIE 1931 2 o 觀測者 CIE 1964 10 o 觀測者 CIE 1931 matching function CIE 1964 matching function
CIE 1931 matching function
Tristimulus Values X Y Z
CIE 1931 色度座標(x, y)
CIE 1960 UCS(Uniform Chromaticity Scale) 均勻色度座標(u, v) u= v= 4 x -2 x+12 y+3 6 y -2 x+12 y+3
CIE 1976 UCS (Uniform Chromaticity Scale) 均勻色度座標(u’, v’) u’ = v’ = 4 x -2 x+12 y+3 9 y -2 x+12 y+3 = u = 3 2 v