Patent ID: 6990235
Filing Date: 2006-01-24
Classification: G06K,G06T

Abstract:
1. A pattern extracting apparatus, comprising: color difference calculating means for calculating the color difference between adjacent pixels of an area represented with a predetermined color; threshold value assigning means for assigning a threshold value corresponding to the color difference; labeling means for assigning a label to a pixel adjacent to a pixel represented with the predetermined color corresponding to the threshold value; print model generating means having meshes of basic colors, basic color dots being disposed at lattice points of the meshes, the meshes being rotated and superimposed on each other, the sizes of the basic color dots being varied, so as to generate a color as a print model; and color difference table generating means for generating a color difference table that stores luminance values of colors generated by said print model generating means and the color difference between adjacent pixels corresponding to the luminance values in each read resolution of the print model.