Patent ID: 6701010
Filing Date: 2004-03-02
Classification: G06K,G06T

Abstract:
A pattern extracting apparatus, comprising:a color difference calculating unit calculating the color difference between adjacent pixels of an area represented with a predetermined color; a threshold value assigning unit assigning a threshold value corresponding to the color difference; a labeling unit assigning a label to a pixel adjacent to a pixel represented with the predetermined color corresponding to the threshold value; and a grouping unit categorizing label images labeled by said labeling unit as a group, said grouping unit comprising: an enclosing rectangle calculating unit calculating an enclosing rectangle of a pattern of a label image labeled by said labeling unit; a color information calculating unit calculating color information of the pattern of the label image; a geometry information calculating unit calculating geometry information of the enclosing rectangle; and a determining unit determining whether or not to categorize the pattern of the label image as the same group corresponding to the color information and the geometry information.