tianny99:Based on the white color-coordinate(x,y), we can obtain a factor of n firstly,
wzz>N@| n=(x-0.3320)/(0.1858-y),
;Br
#e1~ then, we can calculate CCT(Correlated Color Temperature) as following,
W:* {7qJ CCT=437*n^3+3601*n^2+6831*n+5517
(2008-07-22 16:05)
|]'0z0>