Diff of YKJ

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.
• Go to YKJ.

- YJK方式とは
--  http://ngs.no.coocan.jp/doc/wiki.cgi/datapack?page=9%BE%CF+YJK%CA%FD%BC%B0


 R = Y + J
 G = Y + K
 B = (5/4)Y - (1/2)J - (1/4)K

 Y = (1/2)B + (1/4)R + (1/8)G
 J = R - Y
 K = G - Y