Determining raster color values by direct recording of different print technology substrates involves determining percentage ratio of number of covered elements to total number of image elements

摘要

The method involves allocating discrete grey values to image elements of a defined image section, forming a frequency distribution of the grey values, determining a middle region between a first maximum relative to a number of covered/black image elements and a second maximum relative to a number of free/white elements and determining the raster color value of the recorded image section as a percentage ratio of the number of covered elements to the total number of elements. An independent claim is also included for the following: (a) an arrangement for determining raster color values by direct recording of different print technology substrates.