Patent ID: 6650776
Filing Date: 2003-11-18
Classification: G06K

Abstract:
A two-dimensional code recognition processing method for recognizing a two-dimensional code comprising the steps of:generating binary data from image information acquired externally in accordance with a predetermined threshold value; detecting a reference cell having human-readable information associated with said two-dimensional code directly visible thereon and serving as a reference in recognizing said two-dimensional code based on said binary data generated in said binary data generating step; detecting corner cells each located in a predetermined search range with respect to said reference cell detected in said reference cell detecting step, on the basis of said binary data generated in said binary data generating step; and detecting code data assigned to said two-dimensional code existing inside an area of a code part enclosed by said reference cell and by said corner cells on the basis of said binary data generated in said binary data generating step, wherein said two-dimensional code is made of a plurality of cells arranged in accordance with predetennined layout rules.