| 主权项 |
1. A method for generating a relief print on a substantially flat substrate, wherein palpable differences exist between a height of various parts of the relief print, by a printer comprising a number of colorants including a white colorant, said printer being configured to print a relief print in a number of passes, the method comprising the steps of:
defining a relief raster image, comprising customary color channels for indicating a color of each pixel and a height channel for indicating a height of each pixel of the relief raster image; discriminating in the relief raster image for each pixel a relief part, a white part and a skin part, the parts constituting the height of the pixel; deriving from the relief raster image a number of pass images to be printed on top of each other, each pass image comprising pass pixels for which a colorant composition is established based on a part of the pixel to which the pass pixel contributes; and printing said number of pass images by applying said established colorant composition on a position of the substrate associated with a pixel in the relief raster image, wherein the relief part comprises an arbitrary colorant composition, the white part comprises mainly white colorant and the skin part comprises colorants according to a color as defined in the color channels. |
