| 摘要 |
<p>A method for controlling printing of graphical information in combination with a coding pattern, wherein the graphical information and the coding pattern areto be printed with separate inks, the coding pattern being printed using a black ink corresponding to a K component of a CMYK colour space and the graphical information being printed using colour inks corresponding to the CMY components, comprises:receiving a representation of the graphical information in RGB colour space, the representation comprising a set of elements making up the graphical information, each element comprising R, G and B component values together representing the colour of the element; and transforming the representation of the graphical information, said transformation mapping the R, G and B component values onto a range of values which is outside a domainwhere said black ink will be mixed by a printer into said colour inks during printing of the graphical information.</p> |
