The invention relates to a method for applying colors by subdividing the colors according to percentages allocated to each of the printing points which are, for example, divided centesimally in accordance with a rule which defines the distribution of appropriately superimposed basic colors, thereby creating binaries and blacks according to the subtraction of the percentage of the basic color most used percentually from the sum of basic colors less used percentually. Thus, the totality of visible colors are optically generated. The background of the surface to be printed is previously analyzed and the percentage quantity in each point of the based colors is deducted in the proportion contained in the background. The application of pigments is carried out by addition of transparent substrate or medium or while, until the proportion of each color is completed.
An image processing system including an image processing unit for processing input image data and an output unit for outputting an image processed in the image processing unit. The image processing unit has the function of cutting out a background portion of the image and effecting color specification and further has the function of specifying a method of processing the background portion. When printing the image, the output unit recognizes the background portion on the basis of the color specification and carries out background processing for the recognized background portion on the basis of the specified background processing method. It is possible to prevent visible unevenness of printing from occurring in the background portion.
