| 摘要 |
<p>For the reproduction of a colour image, an input unit (1) scans the image and derives a plurality of colour signals (2) corresponding to each picture element of the original image. The colour signals are converted (7) into a set of luminance and subtracted colour signals (8, 9a, 9b). The set of luminance and subtracted colour signals are then converted into a set of ink concentration signals (12) for the colour printer (13) using a conversion table (11). The conversion table (11) stores sets of ink concentration signals which are within a reproducible range of colours by the colour printer (13). Where the set of luminance and subtracted colour signals do not correspond to a colour reproducible by the printer, a set of ink concentration signals which correspond to a reproducible colour are provided by the conversion table (11). </p> |
