| 摘要 |
A maximum value (Yimax) and a minimum value (Yimin) of each pixel of inputted pixel data (Ri, Gi, Bi) are derived, a saturation adjustment value (X) is derived using a function g (Yimax, Yimin) is derived, white pixel data (Wo) is derived by a function f (Yimin), and output pixel data (Ro, Go, Bo) is derived using these. Even when saturation which is represented by RGB trichromatic data is high, adjustment is possible whereby said data is converted to RGBW quadricolor data wherein brightness is improved without hues being changed. |
