| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide color temperature correcting technology for correcting the color temperature of a color close to white to be raised while keeping balance of luminance levels of the similar colors. <P>SOLUTION: Denoting a maximum value of three primary color signals RGB by Max, a minimum value by Min, and coefficients by (a) and (b), the color temperature of only colors close to achromatic colors is changed by adding (a*Min-b*Max) to the signal B. Denoting a luminance level by Y, and coefficients by (c) and (d), the color temperature of only colors close to achromatic colors is changed by adding (c*Y-d*(Max-Min)) to the signal B. Color temperature of only colors close to achromatic colors is changed by multiplying the signal B by a coefficient based on a value of (Max-Min)/Max, which represents saturation. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
