tianny99:Based on the white color-coordinate(x,y), we can obtain a factor of n firstly,
3|@t%K n=(x-0.3320)/(0.1858-y),
IdRdW{o then, we can calculate CCT(Correlated Color Temperature) as following,
8xI`jE"1 CCT=437*n^3+3601*n^2+6831*n+5517
(2008-07-22 16:05) _#qe#