Patent ID: 6807302
Filing Date: 2004-10-19
Classification: B07C,G06K,Y10S

Abstract:
A recognition apparatus for recognizing sorting information as a character string written within one of a cellophane region and label region of a paper-like material, comprising:reading means for reading a density value of each pixel in a main scanning direction and sub-scanning direction of the paper-like material; first determining means for determining a portion in which a variation in the density value exceeds a preset value based on the density value of each pixel read by said reading means; second determining means for determining said one of the cellophane region and label region of the paper-like material based on the portion which is determined by said first determining means that a variation in the density value exceeds the preset value; and recognizing means for recognizing the sorting information based on the character string written within said one of the cellophane region and label region determined by said second determining means, wherein said first determining means includes differentiating means for differentiating the density value of each pixel read by said reading means, first extracting means for extracting edge components of one image based on a differential signal of one image obtained by said differentiating means, and second extracting means for extracting horizontal and vertical projection images for the edge components of one image extracted by said first extracting means, and wherein said second determining means determines a region in which the edge components are concentrated as said one of the cellophane region and label region based on the horizontal and vertical projection images extracted by said second extracting means.